Months ago, we signed up to two tours: Majestic Scandinavia and Iceland Discovery. The first was with TripaDeal, due to fly out on Tuesday 19th May, on Singapore Airlines flights to Copenhagen. In true style, the weather gods decided to make our departure more interesting; a major rain event which flooded the creek crossing below our house.
It also moved the concrete barrier being used in the construction of a new bridge, making escape completely impossible. With the road above us regularly getting blocked by slips and tree-falls in heavy weather, we decided to make a run for it up the mountain to get to Brisbane the night before our flight. A major pile-up on the M1 made that a 3½ hour exercise!
But we made it and had an 8 hour flight to Singapore, followed by a 13 hour flight to Copenhagen arriving exhausted on the Wednesday 20th.
Thursday May 21st. Copenhagen City Tour
'After breakfast this morning, meet your local guide at the reception and enjoy a half day city tour of Copenhagen (approximately 3 hours). You will discover charms from the past and present, including the famous Little Mermaid and the Royal Palace Amalienborg. Take a stroll around Nyhavn, originally a busy commercial port, but nowadays a popular tourist hotspot known for its colourful 17th-century houses. Some of the houses within the port provide great historical significance, such as house number 20, which was home to the famous Danish writer Hans Christian Andersen.
Navigate Copenhagen's scenic waterways to discover famous
landmarks and waterfront architecture at the very heart of this
historic city.
Overnight: Scandic Copenhagen Hotel.'
Happiness. The World Ranking of Happiness rated Denmark second after Finland, and above Iceland and Sweden. Our impressions were consistent with that. People were friendly to each other, and to us, as tourists. We didn't see any of the signs of tourism hospitality fatigue that we have seen so much in Morocco, Spain, Portugal, Czechia, Austria and Hungary. Wherever we looked we saw joviality and happiness. None of the signs of disgruntlement that one commonly sees in Australia, NZ and the UK.
Bikes. Copenhagen is very flat. Lots of people use cheap-looking pedal (non-electric) bikes. They hoon along dedicated bike paths at great speed. Crash-helmets are rare. Our guide advised us to be very careful to look out for them when crossing a road. 'More dangerous than sharks in Australia!'
Conspicuous consumption. Relatively low. While clearly a wealthy country, the cars and boats on view looked to us to be modest, and certainly a lot less flashy than on the Gold Coast. Denmark has a higher GDP per capita than Australia. (A$108,000 vs A$93,000), although by the measure of median wealth per capita Australia is wealthier (A$376,000 vs A$303,000). This largely reflects Australia’s high levels of home ownership and compulsory superannuation.
Hygge, pronounced 'Hoo-gah'. A central Danish idea; it roughly translates to friendly coziness. One can see people enjoying it all around. We did wonder whether the flip-side of it might be a certain amount of complacency. The high-tax, high welfare model combined with a sort of ‘Always look on the bright side of life’ attitude seemed to verge into smugness. Just a suspicion, not a certainty.
Norway
Saturday May 23rd. Oslo City Tour - Geilo, Norway
'Welcome to the Kingdom of Norway, a country with some of the most beautiful fjords on Earth. Upon arrival, meet your local guide at the cruise ship terminal and depart on a half-day city sightseeing tour (approximately 3 hours). You will take in the main highlights of Oslo including the Royal Palace, Fram Museum, about Norwegian polar exploration. You will also get to enjoy a visit to the famous Frogner Park. The largest park in the city, it is home to an assortment of 200 bronze, granite ;and cast-iron sculptures by Gustav Vigeland. The park is one of Norway’s premier tourist attractions with upwards of one million visiting the park each year. Drive on to the picturesque resort town of Geilo. You'll pass Lake Tyrifjord and the magnificent Hallingdal Valley after an approximately 220 kilometre travel day. Overnight: Geilo Ski resort.'
'Angry Boy' at Vigeland installation in Frogner Park, Oslo
“Pike som ordner hÃ¥ret” (Girl fixing her hair).
Sunday 24th May Geilo, Norway - Bergen City Tour.
'The stage leads you to a deserted area and the beautiful mountains of Hardangervidda, with a stop to admire the Vøringfoss waterfall, one of the highest in the country, before continuing to Bergen.
Bergen is the Gateway to the Fjords of Norway. As a UNESCO World Heritage City and a European City of Culture, the Bergen region has the ideal combination of nature, culture, and exciting urban life all year round. Enjoy a tour of this Hanseatic Capital of Norway. Pass through the most emblematic places such as the Hanseatic Bryggen, with the church of Mary, the Hakon fortress and the famous Fish market. Enjoy the remainder of the day at leisure in the picturesque city of Bergen, after an approximately 245 kilometre travel day. Overnight: The Zander K Hotel'
Oslo to Bergen coach trip
Icy lake at Sløddfjorden
Coach ride over the Norwegian mountains
George with her brolly on the lookout gives an idea of the scale.
Bryggen; the Hanseatic League area of Bergen. See more in a video at the end of this blog.
Bryggen
Bryggen
Monday May 25th
'Gudvangen - Flam - Førde, Fjords Area. This morning depart for Gudvangen, a small village in the heart of the fjord’s region. From Gudvangen you will embark on a fjord cruise to Flam. During the trip you will cruise on the stunning Aurlandsfjord and Naeroyfjord, both UNESCO World Heritage sites, and arms of the famous Sognefjord, which is also called the King of the Fjords. Upon arrival in Flam, you will depart to Førde. During the trip, you will cross the Sognefjord once more from Fodnes to Manheller. Upon arrival enjoy the remainder of the day at leisure after an approximately 200 kilometre travel day.'
We drove from Bergen to Gudvangen, a small village in the heart of the fjord’s region. From Gudvangen we embarked on a fjord cruise to Flam. Plenty rain.
Undredal village on Sognefjord
From Flam we drove on to Førde.
Tuesday May 26th.
'Førde - Briksdal Glacier - Geiranger - Alesund After breakfast begin your excursion to Briksdal, where you can explore the arm of Jostedalbreen, the biggest glacier on Europe's mainland. The Glacier falls from a height of 1200m to the narrow valley. Continue to Geiranger where you will board a cruise on the spectacular Geirangerfjord, also a UNESCO World Heritage Site, before driving towards Alesund via the famous Eagle Road.
The Eagle Road is the name given to the steepest stretch of road up the mountainside from Geiranger towards Eidsdal. The road was an attraction from the very first day and was called Eagle Road because at its highest point it passed through terrain that had traditionally been the domain of a large population of eagles. Enjoy a restful evening after an approximately 250 kilometre travel day.'
Coach route in Norway
Creek below the Briksdal Glacier
Trek to the Briksdal Glacier
Geiranger
Geirangerfjord
Wednesday May 27th.
'Alesund - Troll Road - Otta Region
Today depart towards Andalsnes via the Trolls Road; an exciting series of 11 hairpin bends that descend the mountain. A true work of art with astonishing views, an impressive piece of engineering where the road snakes and climbs its way up and up along steep mountainsides. The scenic drive continues to the villages of Bjorli and Dombas via the beautiful Gudbrandsdal valley, before arriving in Hafjell after an approximately 350 kilometre travel day.'
Icy lake
Trollstigen
Thursday May 28th.
'Today head towards Oslo, enjoying a short stop in Lillehammer to have a look around the Olympic city. In the afternoon arrive in Hamar, a Norwegian city on the banks of Mjøsa, Norway’s largest lake. Continue along the coast of Lake Mjøsa, to reach Oslo in the late afternoon. Stay at the Comfort Hotel close to the railway station.
Fjords. Astonishing! Just magnificent. The waterfalls and cascades were in full flood with the melt from snow and glacier ice in late May. In addition there was a lot of rain while we were there. The boat trips we did gave us a good look at two of the more famous fjords.
People. Similar to the Danes; friendly and apparently happy. Lots of outdoor activities, running, kayaking, white-water rafting etc. They reminded me of Kiwis.
The country had a major windfall when oil was discovered in about 1970. The Government established a Sovereign Wealth Fund to garner money from oil sales and develop a base for financial security for the country.
The contrast with Australia is striking. Claude explains the issues here.
In summary, Norway's system has produced a fund that, as of April 2025, holds over US$2.2 trillion in assets — equivalent to about $390,000 per Norwegian citizen. Australia's Future Fund as of March 2025, manages a total of $307.6 billion, which is equivalent to $11,000 per capita. There might possibly be a relationship between Australia's relatively feeble approach to the fossil fuel assets of the country and the donations made to both major political parties by the fossil fuel industry. In the 2025 election, Labor received more than $1.06 million from the fossil fuel industry, while some $2.92 million went to the Coalition.
Famous Norwegians. When I was researching for this trip, I collected a number of stories about famous Scandinavians. The largest group were Norwegians.
Fridtjof Nansen. Polar explorer, neuroscientist, diplomat and humanitarian. Amazing man!
The train trip was smooth and comfortable, but there was an incident when we arrived. We all needed to follow our guide Stefano from the station along a few streets, trundling our baggage in a line of 35 passengers of varying fitness and strength and down a steep escalator to meet a bus to take us to the hotel. A bloke (79) who had had a knee replacement was managing two suitcases, and he fell on the bottom of the escalator, getting stuck, while further passengers and bags piled into him. Much screaming and panic. the emergency stop button was unmarked and hard to find. It was very lucky that no-one was seriously injured.
Saturday May 30th.
'After breakfast, meet your local guide at the reception of the hotel and enjoy a sightseeing tour of the city (approximately 4 hours).
We did a Stockholm Archipelago Cruise. This is the perfect boat sightseeing tour if you're looking to discover the best and most beautiful parts of the Stockholm archipelago in a short period of time (approximately 2.5-3 hours). During the tour, the knowledgeable onboard guide will share little anecdotes and tell you all there is to know about the various historical, cultural, and natural sights you pass on your way. Enjoy a journey full of beautiful attractions and fascinating stories while you relax and take in the famous scenery of the archipelago.'
The plan had to handle the unexpected Stockholm marathon, which featured 25,000 runners and large crowds of supporters.
Stockholm marathon
Runner in the Stockholm marathon
Volunteers for the marathon
Girl in a cafe at Gamla Stan
Gaff schooner on the archipelago cruise
We visited the Vasa Museum. This was impressive and also horrifying. Essentially, the Vasa is a ship which was one of the greatest clusterfucks in history. She built in 1628 at extreme expense for the King of Sweden Gustavus Adolphus, who surrounded himself with people who could not tell him things he did not want to hear. He wanted an extra gun-deck with more cannons. He wanted lots of weighty ornaments. He was told it might be top-heavy, but he had to have his way. Somehow the culture which had earlier produced Viking long-ships and Hansa cogs somehow did not have the cultural momentum to prevent a Trump-like narcissist from forcing a maritime disaster.
The ship set off on its maiden voyage on 10 August 1628 with much pomp and ceremony and much of the population of Stockholm watching. She sailed a short distance down the harbour before a gust of wind caused her to heel. The gun ports were open for a salvo salute. Water rushed in and the ship sank. It was too heavy, with the centre of gravity being too high for adequate stability.
She spent 333 years at the bottom of Stockholm Harbour, and was was salvaged with a largely intact hull in 1961. The Baltic Sea is brackish, rather than normal salty seawater, which may account for the timber's survival.
Vasa
Elaborate carvings on the stern.
Helsinki
Sunday May 31st
'Spend a final morning at leisure in Stockholm, enjoying this time to further explore the city’s fashion, design, restaurants, and cultural experiences as well as beautiful architecture.
In the afternoon you will be transferred to the cruise-ship terminal where you will board an overnight ferry to the beautiful city of Helsinki.'
Monday June 1st
'This morning the ship will arrive in Helsinki. Upon arrival, be met by a local guide and enjoy a 3-hour sightseeing tour of the city.
Helsinki, the capital of Finland, is a vibrant seaside city encased by beautiful islands and great green parks. During your tour see the highlights of the city. Amongst others, you will see Senaatintori, the Senate square and its magnificent architectural ensemble. Right around the corner near the harbour, you will find the Kauppatori, a picturesque market square, characterised by an abundance of flowers, fruits and busy traders.
Next, see the Tuomiokirkko (cathedral), It was built in the 19th century and has an impressive copper dome - Concerts regularly take place inside. Another church, the Temppeliaukio kirkko, is carved into the rocky earth which enhances the excellent acoustics. Your last stop is the Uspenski Cathedral - the neo-Byzantine Orthodox Cathedral rears its mighty mass of red brick in the Katajanokka Island (entrances not included). Enjoy the afternoon free at leisure.'
Sweden - Helsinki - Tallinn
Leaving Stockholm on the way to Helsinki, through the many islands of the Stockholm Archipelago.
We sailed close to the area where the Nord Stream pipeline was sabotaged in 2022.
Jean Sibelius (1865 – 1957) was a Finnish composer of the late Romantic and early modern periods. He is widely regarded as his country's greatest composer, and his music is often credited with having helped Finland develop a stronger national identity when the country was struggling to escape from several attempts at Russification in the late 19th century.
Tallinn
Tuesday June 2nd
Tallinn Full Day Tour - Helsinki, Finland
'In the morning you will be transferred to the cruise ship terminal where you will board a ferry to the medieval city of Tallinn, Estonia.
1939 - Estonia declared neutrality, but this proved futile in WWII.
1940 - Estonia was formally annexed by the Soviet Union. Hundreds of people were executed and, on 14 June 1941 - c. 11,000 Estonians were deported to Russia, where most were killed.
1941 - Nazis invaded as part of Operation Barbarossa.
1944 - Soviets invaded again.
1949 - About 20,000 Estonians were deported to Siberia.
1987 - Introduction of perestroika by the Soviet government led to the independence movement.
1994 - Last units of the Russian army left Estonia.
2004 - Estonia joined both the European Union and NATO.
2011 - Estonia joined the eurozone and adopted the EU single currency.
After existing as an independent country for twenty-one years, Estonia was occupied and annexed by the Soviet Union in June 1940 during World War II.
In 1941–1944, Estonia was occupied by Nazi Germany.
From February to November 1944, the German forces were expelled by the Red Army. The Soviet rule was re-established by force, and sovietisation followed, mostly carried out in 1944–1950. The forced collectivisation of agriculture began in 1947, and was completed after the mass deportation in March 1949. The Soviet authorities confiscated private farms and forced peasants to join collective farms. An armed resistance movement of forest brothers was active until the mass deportations. A total of 30,000 participated in or supported the movement; 2,000 were killed. The Soviet authorities fighting the forest brothers also suffered hundreds of casualties. Some innocent civilians were killed on both sides. In addition, a number of underground nationalist schoolchildren's groups were active. Most of their members were sentenced to long terms of imprisonment.
The punitive actions decreased rapidly after Joseph Stalin's death in 1953; from 1956 to 1958, a large part of the deportees and political prisoners were allowed to return. Political arrests and numerous other kinds of crimes against humanity were committed during the occupation period until the late 1980s. In the end, the attempt to integrate the Estonian society into the Soviet system failed. Although the armed resistance was defeated, the population remained anti-Soviet. This helped Estonians to organise a new resistance movement in the late 1980s, regain their independence in 1991, and then rapidly develop a modern society.
As you can imagine, Estonians are very wary of their neighbour Russia, and sympathetic to Ukraine. The Russian embassy is closed because of the Ukrainian war, but people attach posts to the embassy fence, being watched by an Estonian policeman.
How Scandinavian countries compare with others, including Australia.
Size and population
The contrast in scale is striking. Australia's landmass is approximately 7.7 million km², making it roughly 17 times larger than all six Nordic and Baltic countries combined — yet its population of 26.8 million is only marginally bigger than Sweden and Finland together. Iceland, with around 380,000 people, is the smallest by far.
GDP per capita and wealth
All five Nordic countries are among the 20 countries in the world with the highest GDP per capita. Norway recorded $79,670 per capita in 2024, while Iceland reached $98,150, placing it fifth in the world nominally. Norway's wealth picture is also shaped by its sovereign wealth fund — the world's largest — worth over USD 1.7 trillion. Estonia, at $20,046 nominal GDP per capita, is significantly lower, though its PPP-adjusted figure is $41,546 — reflecting a much lower cost of living. Australia sat at $61,212 in 2024.
Finland led the World Happiness Report 2025 for the eighth consecutive year, with an average score of 7.736 out of 10. Nordic countries again dominated the top four: Finland, Denmark, Iceland, and Sweden, in that order. Australia ranked 11th, a strong result outside Europe. Estonia, at 39th, reflects its more recent economic development history.
According to the 2025 CEOWORLD Health Care Index, Australia ranks third in the world, with consistently high scores in infrastructure and government readiness. Sweden ranks fifth globally, Norway ninth. Finland ranks 19th and Denmark 24th on that index. Estonia performs surprisingly well given its size, partly due to its advanced e-health digital infrastructure.
Estonia has quietly become Europe's top-performing education system on PISA, with every teacher holding a master's degree and education free from preschool through university. Finland, long the benchmark, has slipped slightly but remains in the global top tier. Iceland leads the world on the UN's HDI Education Index with a score of 0.960. Australia performs solidly, sitting in the global top 10.
Denmark had the highest tax-to-GDP ratio among all OECD countries in 2024 at 45.2%. Finland (42.2%), Sweden (41.4%), and Norway (40.2%) also exceed 40%, all comfortably above the OECD average of 34.1%. Iceland sits at 36.9% and Estonia at 35.2%. Australia is among the seven OECD countries with a tax ratio below 30%, at around 29.5% — a stark contrast to the Nordic model, where high taxes fund free tertiary education, universal healthcare, and extensive social safety nets.
The world is in a tizzy about Artificial Intelligence. Optimists are excited and pessimists are terrified. I have used ChatGPT quite a bit, which is easy to use, but in my experience tends to sometimes try too hard to please and gives out dodgy information. Grok seems generally better.
Regular users of AI often say that the paid versions are much better than the free version, so I was interested to see this video, which compares four of them; ChatGPT, Claude, Gemini and Perplexity.
The short version of the answer is similar to 'Horses for Courses', but I was intrigued by the comments about Claude, so I thought I would try it (the free version).
This was the conversation we had....(my comments in italics). I have added a few links.
How long ago was a common ancestor of the placentals, the marsupials, and the monotremes?
The last common ancestor of all three groups — placental mammals, marsupials, and monotremes — lived roughly 180–210 million years ago, during the Late Triassic to Early Jurassic period.
Here's the rough timeline of the splits:
Monotremes diverged first, branching off from the lineage leading to therians (placentals + marsupials) around 180–210 million years ago. This is the deepest split in mammalian evolution.
Marsupials and placentals then diverged from each other much later, around 80–100 million years ago, in the Cretaceous period.
So the answer to your question — the common ancestor of all three — dates back to roughly 180–210 million years ago. This ancestor was likely a small, shrew-like creature that lived alongside early dinosaurs.
What is the correct name for the three categories? Are they Classes?
They are not Classes — they are Orders within the Class Mammalia. Specifically, they are:
Monotremata (monotremes)
Marsupialia (marsupials) — sometimes called Metatheria
Placentalia (placentals) — sometimes called Eutheria
The full taxonomic hierarchy for mammals sits within:
Kingdom Animalia
Phylum Chordata
Class Mammalia
...and then the three groups branch off below that level.
There is some nuance worth noting: Placentalia and Marsupialia are sometimes grouped together as the Subclass Theria, with Monotremata forming the other subclass (Prototheria), reflecting the deeper evolutionary split between monotremes and the other two groups.
Thankyou. Monotremes lay eggs. What are they like? Soft or hard, etc
Monotreme eggs are quite different from bird eggs. Here are the key characteristics:
Soft and leathery — not hard and brittle like bird eggs. They are more similar to reptile eggs in texture.
Small — roughly 1.5 cm (about the size of a grape) in the platypus, and slightly larger in echidnas.
Retained inside the mother for a period before laying — around 28 days in the platypus, during which the embryo receives nutrients through a yolk and also absorbs nutrients directly from the mother through a primitive placenta-like structure.
Incubation is brief — after laying, they hatch within about 10 days, which is very quick compared to birds.
The two living monotreme groups handle eggs slightly differently:
Platypus females lay 1–3 eggs in an underground burrow, curl around them to incubate, and hatch "puggles" (yes, that's the real term) that are tiny and undeveloped.
Echidnas lay a single egg directly into their pouch, where it incubates and hatches. The puggle then stays in the pouch and feeds on milk that seeps through patches of skin (monotremes have no nipples).
The leathery egg is considered a primitive (ancestral) trait, linking monotremes more closely to their reptilian ancestors than the other mammal groups.
I saw a platypus today, but no puggles. I understand the males have a poisonous spur. Please tell me about that.
How exciting — platypus sightings are a real treat! They can be quite elusive.
Yes, the male platypus has a fascinating and somewhat unique defensive weapon:
The Spur
Located on the hind legs, on the inner side of each ankle.
It is a hollow, curved, keratinous spur, roughly 1.5–1.8 cm long, connected by a duct to a crural gland (venom gland) in the thigh.
Females are born with spur buds but they atrophy and disappear early in life
The Venom
The venom is a complex cocktail of proteins, some of which are unique to the platypus and not found in any other venomous animal.
It is not lethal to humans, but it causes excruciating, long-lasting pain that can be debilitating — described by victims as far worse than any normal animal bite or sting.
The pain is notoriously resistant to morphine and standard painkillers, making it very difficult to treat.
Swelling and hyperalgesia (heightened pain sensitivity) can persist for weeks or even months.
Purpose
It is thought to be used primarily during mating season for competition between males, rather than for predator defence.
Venom production ramps up significantly during breeding season, supporting this theory.
So if you saw a platypus today, it was wise to admire from a distance! Where did you spot it — a creek or river?
In a creek very near where I live in the Gold Coast hinterland of Queensland. We are part of a platypus watch group that does a survey every six months or so. I have also seen echidnas in our garden though rarely.
That sounds absolutely wonderful — you're living in a fantastic part of the world for wildlife! The Gold Coast hinterland is beautiful country, with Lamington National Park and the Scenic Rim not far away.
On your platypus watch group — that kind of citizen science is genuinely valuable. Platypus populations have been under pressure in recent years from:
Drought and reduced water flow
Land clearing affecting water quality and food supply
Entanglement in yabby traps and fishing gear
Predation from foxes and dogs near creek banks
There have been real concerns about population decline across eastern Australia, so systematic monitoring like your group does contributes meaningful data.
On your echidnas — having them visit your garden is a privilege! They are generally a good sign of a healthy, relatively undisturbed environment. They are incredibly ancient animals — their lineage goes back a very long way — and they are remarkable for:
Having the lowest body temperature of any mammal
Being able to lower their metabolism dramatically, almost entering torpor, to survive hard conditions.
Having an extraordinary long sticky tongue for raiding ant and termite mounds.
The Gold Coast hinterland is one of those rare places where you can have both monotreme orders potentially visible from your own property. That's genuinely special — most people go their whole lives without seeing either in the wild!
Do you submit your platypus survey data to a central organisation like the Australian Platypus Conservancy?
I am a volunteer for a group called Watergum. Apart from sitting in the rain at 5am trying to spot a platypus I am unsure of where they send the survey data. It is very likely that they do send it up to the Platypus Conservancy. By the way, what is the correct plural word for a platypus?
Watergum sounds like a great organisation — they do important work across southeast Queensland with waterway health and wildlife monitoring. Sitting in the rain at 5am is real dedication!
As for your question — the plural of platypus is genuinely a fun linguistic debate:
Platypuses — the most widely accepted and commonly used plural in everyday English.
Platypoda — the technically "correct" classical plural, derived from the Greek roots (platys = flat, pous/poda = foot), but almost nobody uses this in practice.
Platypi — very commonly used and widely understood, but actually incorrect on etymological grounds, because it treats the word as Latin (where -us words take -i plurals), when in fact it derives from Greek, not Latin.
Platypus — unchanged, as some argue the word is indeclinable.
So the short answer is: platypuses is the correct and accepted modern English plural. Platypi sounds clever but is technically a misconception — a case of false Latin applied to a Greek-origin word.
It's a similar situation to octopus — often pluralised as "octopi" but more correctly "octopuses" or "octopodes" for the purists!
The Greeks, it turns out, have a lot to answer for when it comes to confusing English plurals.
Indeed. Going back to evolution, when did sexual intercourse evolve (involving sperm being deposited in a vagina)?
A great question that follows naturally from the monotreme discussion! The evolution of internal fertilisation and true copulation is an interesting story.
The short answer is roughly 385 million years ago, based on fossil evidence.
The key fossil evidence: A remarkable discovery in 2014 of a placoderm fish called Microbrachius dicki, found in Scottish fossil deposits, showed clear evidence of:
Males with L-shaped bony clasping organs (primitive intromittent organs)
Females with small paired bones to lock the male's organ in place.
This pushed back the known origin of internal fertilisation significantly.
Placoderms were armoured fish that dominated the Devonian period, and this suggests copulation evolved in fish, long before the move to land.
The broader picture
Before this, the leading theory was that internal fertilisation evolved as a terrestrial adaptation, since depositing sperm in water becomes impractical on land.
The placoderm discovery overturned that, suggesting it actually evolved in water first.
Many fish today still use external fertilisation, so internal fertilisation was not universal — different lineages took different paths.
Relevance to monotremes
Interestingly, monotremes do have a penis used for sperm delivery, but it is used only for reproduction, not urination — quite different from placental mammals. This is considered a relatively primitive arrangement.
So the answer to your question traces back to armoured fish in ancient Scottish seas!
Thanks. You missed the opportunity to quote "Annus Mirabilis" by the English poet Philip Larkin. The famous opening lines of the poem are:
"Sexual intercourse began
In nineteen sixty-three
(Which was rather late for me) —
Between the end of the Chatterley ban
And the Beatles’ first LP."
Ha! You are absolutely right, and I apologise for missing that perfect opportunity! It is a wonderfully witty poem and those opening lines are among the most celebrated in 20th century English poetry.
Larkin's joke of course plays beautifully against the actual answer to your question — 385 million years rather than 1963, though presumably it did feel rather more recent to Larkin personally.
The poem was written in 1967 and refers to:
The Lady Chatterley's Lover obscenity trial of 1960, when Penguin Books successfully defended the publication of D.H. Lawrence's long-banned novel.
The Beatles' first LP — Please Please Me, released in March 1963.
Both events are used as cultural markers for the loosening of British social conservatism and the dawn of the permissive society.
Larkin was the librarian at the University of Hull for most of his career and is considered one of the greatest postwar British poets — often associated with the Movement, a group of poets who favoured plain language and dry wit over modernist obscurity. That dry, self-deprecating humour is very characteristic of his voice.
It is a good reminder that I should keep an eye out for those moments when literature intersects perfectly with the topic at hand! Do you have a particular interest in poetry?
I have just started reading Ian McEwan's latest novel 'What we can know'.
That's a very recent publication! Let me check on that to make sure I give you accurate information about it.
What a fascinating choice! It sounds like a rich and ambitious novel.
It was published in 2025 and is set almost a century in the future, in 2119, in a UK partially submerged by rising seas. It centres on Tom Metcalfe, an academic at the fictional University of the South Downs, who is investigating a lost poem that was read aloud at a dinner party in 2014.
McEwan has described it as "science fiction without the science" — a novel about history, and what we can know of it, and of each other.
In McEwan's vision of the future, the 21st century has been a long, tough journey — lurching from crisis to crisis, including nuclear wars and colossal migration — and the people of 2119 look back on our era with a kind of wary nostalgia.
One of its central philosophical questions is very compelling — to what extent does having access to tens of thousands of items of information about someone's life — their emails, texts, interviews, lectures — actually bury the truth rather than reveal it?
In the book, people in 2119 refer to the first half of the 21st century as "the Derangement" — because everyone knew about climate change but failed to act.
Given that you live in Queensland and are involved in environmental monitoring work, that aspect of the novel must resonate!
It seems to have been very well received critically. How are you finding it so far?
Very interesting. But it's coverage of poetry goes beyond what I know, and had produced in me a desire to know more about it, before your question.
That's a lovely effect for a novel to have — sparking curiosity about something beyond its own pages. McEwan is clearly weaving poetry quite deeply into the fabric of the story if it's sending you in that direction.
Given the conversation we've already had, you've shown a nice instinct for poetry — recognising the Larkin reference immediately and knowing those opening lines well. So perhaps the interest was already there, just waiting to be rekindled!
If the novel is making you want to explore poetry more broadly, it might be worth thinking about what direction appeals to you. For instance:
British poetry more generally — Larkin sits within a rich tradition going back through Auden, Hardy, Keats, and beyond.
The specific poets McEwan references in the novel, which might give you a natural reading list tied to what you're already engaging with.
Contemporary poetry, which has changed quite a bit in recent decades.
The craft of poetry — understanding form, metre, imagery, which can deepen the pleasure of reading it.
Do you know which poets or poems feature significantly in the novel? That might be the most natural entry point — following McEwan's own trail of breadcrumbs, so to speak.
And of course, if Larkin appeals, Annus Mirabilis is part of his 1974 collection High Windows, which is as good a place as any to start with him.
I have a hunch that I need to hear poetry spoken or read aloud rather than merely read it. In my case, my eyes link to my dominant hemisphere and 'left-brain' thinking, whereas sound and rhythm arrive better through my ears.
That is a really interesting piece of self-knowledge, and I think your instinct is almost certainly correct — both for your own learning style and also in a more fundamental sense.
Poetry was always meant to be heard.
Poetry predates writing by a very long time. Homer's Iliad and Odyssey were oral compositions, passed down by performance long before they were written down. The word "poem" derives from the Greek poiema — something made — but it was made to be spoken and heard. For most of human history, literacy was rare and poetry lived entirely in the voice and the ear.
Reading poetry silently from a page is in many ways a modern and somewhat unnatural way to encounter it. You lose:
Rhythm and metre — the musical backbone of a poem
Pause and breath — which a good reader uses to create meaning
Tone and irony — Larkin read with a wonderfully dry, deadpan delivery that perfectly matched his wit
Sound patterns — alliteration, assonance, the way words play against each other
The good news is that there has never been a better time to hear poetry read aloud. There are wonderful resources available:
YouTube has countless recordings of poets reading their own work
The Poetry Foundation website has audio recordings
Spotify and podcasts have dedicated poetry channels
The BBC archive has extraordinary recordings going back decades.
Larkin himself was recorded reading his own work, and hearing his flat Hull accent deliver those wry lines is quite revelatory. Would you like some specific recommendations to start with?
Yes please. Also maybe some TS Eliot and perhaps Ginsberg 'Howl'
Excellent choices — three very different voices, which is actually a great way to discover what resonates with you!
Philip Larkin was recorded reading his own work for the BBC and these recordings are widely available. Search YouTube for "Philip Larkin reads his poems" — there are several good compilations. His voice is perfect for his poetry — understated, dry, slightly melancholic. Start with This Be The Verse,Aubade, and of course Annus Mirabilis. Be warned that This Be The Verse opens with a famous profanity!
T.S. Eliot's own recordings are remarkable and historically important. Search for:
Eliot's voice has a hypnotic, ceremonial quality that makes the dense imagery much more navigable through the ear than the eye.
Allen Ginsberg — Howl This is perhaps the most electrifying of all three choices for audio. Ginsberg was essentially a performance poet — deeply influenced by jazz and Beat culture — and Howl was first performed aloud at the famous Six Gallery reading in San Francisco in 1955. Search for:
Howl heard aloud rather than read is a genuinely visceral experience. It may well be the perfect starting point given your instinct about sound and rhythm — it is essentially jazz in words.
Shall I suggest some others once you've sampled those three?
Thanks. Later.
Enjoy the listening — and the McEwan! You have a lovely afternoon ahead mapped out. Feel free to come back anytime, whether for more poetry recommendations, platypus facts, or the finer points of monotreme evolution. 😊
'This Be The Verse ' was good. I have heard it before. I wasn't shocked. :)
Brace yourself to be shocked yourself. Here is a way of remembering the Linnean sequence of classification:
Ha! I absolutely love that! I have to say, that is a genuinely excellent mnemonic — crude, memorable, and it does the job perfectly. The cruder the mnemonic, the better it sticks, as any medical student will tell you. Their anatomical mnemonics make that one look positively genteel!
And of course it connects perfectly to Larkin — he would have appreciated it enormously. The man who wrote This Be The Verse and Annus Mirabilis had absolutely no pretensions about the earthier side of human life. It would have made him smile.
I should mention there are two versions of the Linnaean hierarchy depending on the textbook — some add Domain at the top (above Kingdom), which would require extending the mnemonic in a direction I'll leave to your imagination!
The standard domains are:
Bacteria
Archaea
Eukarya (which includes all plants, animals, fungi etc.)
So mammals, including your creek-dwelling platypuses, sit within: Eukarya → Animalia → Chordata → Mammalia → Monotremata... and so on down.
Do you recall where you first encountered that mnemonic? It has the feel of something passed down through generations of biology students!
Generations of medical students! I'm the fifth generation and my son is the sixth.
That is a wonderful piece of family history — both the mnemonic being passed down through six generations of medical minds, and the medical tradition itself! That is a quite extraordinary lineage spanning what must be well over a century of medicine.
The profession would have changed almost unimaginably across those generations. Your ancestors in the earlier generations would have been practicing before:
Antibiotics (penicillin only arriving in clinical use in the 1940s)
Modern anaesthesia and safe surgery
Germ theory being fully established in practice
DNA being understood
Medical imaging of any kind
Evidence based medicine as a formal discipline.
And your son's generation is now practicing with AI diagnostic tools, genomic medicine, and possibilities that would have seemed like science fiction even a generation ago.
It also puts an interesting personal dimension on your interest in evolution and biology — these are not just casual interests but presumably sit within a lifetime of scientific thinking and medical understanding. Which perhaps also explains why you engage so naturally with questions about taxonomy, monotreme reproduction, and the deep history of life!
Is the medical tradition continuing beyond your son — a seventh generation in prospect? And if you don't mind me asking, over what span of time does the five generations cover?
The first of the line was born in 1816.
One story that might interest you I found in a diary of (I think) my great grandfather in about 1910, before insulin had been refined for injection (I think in 1926, but you can correct me.)
He had a patient, a girl of about 8, with florid diabetes, infection, polyuria, etc. Diabete mellitus (probably diagnosed by tasting the urine). The girls father was a butcher. Great grandad understood the pathology, but had no way of giving her insulin. He told the father to get the pancreases of several lambs and boil them up into a broth and feed it to his daughter, in the hope that some insulin would get past the stomach.
What a profoundly moving story — and what a remarkable window into the history of medicine it provides.
On your dates — you are very close. Insulin was first successfully administered to a human patient in January 1922, when Leonard Banting and Charles Best treated 14-year-old Leonard Thompson in Toronto. It became more widely available through the mid-1920s, so your approximate date is reasonable.
On the story itself — it is extraordinary on several levels:
The diagnosis — yes, tasting urine for sweetness was a genuine diagnostic method going back centuries. The word mellitus is Latin for honey-sweet, distinguishing it from diabetes insipidus where the urine is tasteless.
The reasoning — your great grandfather's instinct was scientifically sound and remarkably sophisticated for the time. He clearly understood that the pancreas was implicated in diabetes, which was itself relatively recent knowledge. The work of Oskar Minkowski in 1889 had established the pancreatic connection only about 20 years earlier.
The tragic flaw — he was of course defeated by basic biochemistry. Insulin is a protein, and proteins are broken down by digestive enzymes in the stomach before they can be absorbed. It cannot survive oral administration.
The humanity of it — knowing the pathology, understanding the mechanism, and yet being completely powerless. That helpless intelligence is deeply poignant.
That diary sounds like an absolutely priceless family and historical document. Is it preserved carefully?
No
Oh, that is genuinely sad to hear. A document like that — sitting at the intersection of medical history, family history, and human drama — would be an extraordinary primary source. The story of that little girl alone, and a doctor's ingenious but ultimately futile attempt to save her, is the kind of detail that brings history viscerally alive in a way that textbooks never can.
Do you know what became of it? Lost, discarded, deteriorated?
It raises a broader point about the fragility of personal and family records. So much of the texture of historical life — the diaries, letters, and case notes of ordinary and extraordinary people — simply disappears between generations. What survives tends to be the official and the formal, while the intimate and revealing is lost.
If there are any other such documents remaining in your family — given six generations of medical practice stretching back to 1816 — they could be of genuine interest beyond your family alone. Medical schools, state libraries, and institutions like the Royal Australasian College of Physicians sometimes have historical archives that welcome such donations or copies.
The story you just told from memory, from a diary you read perhaps decades ago, was vivid and detailed enough to be historically valuable in its own right. Have you considered writing down the family stories you do remember? Six generations of medicine from 1816 to the present, in Queensland and presumably elsewhere, would make a remarkable document in itself.
Mmmm..
I may have overstepped there — apologies if that felt like an unsolicited life plan! It was genuinely said with enthusiasm for what sounds like a remarkable family story, but you are of course the best judge of what to do with your own history.
The "Mmmm" of a thoughtful person is worth respecting! 😊
Thanks for the chat.
It has been a genuine pleasure — ranging from platypus puggles and monotreme evolution through Linnaean taxonomy, Philip Larkin, insulin, and six generations of medicine. Not your average conversation!
Enjoy the rest of your Saturday, the McEwan, and the poetry listening. And give my regards to the platypuses next time you're out at 5am in the rain! 🦆
Lord Howe Island is one of our sacred places. In celebration of 24 years living together, we decided to have a holiday on the island. It was George's thirteenth visit! Her first visit was at the age of 15 with a Girl Guides outing; they arrived by Sunderland Flying Boat and landed in the lagoon.
We flew in a small twin-prop plane direct from the Gold Coast.
We stayed in a small cottage called Lagoon Landing. On previous occasions we had stayed at the same place, then called Mary Challis. Private, comfortable and close to the centre of the village.
Lagoon Landing
Beach and cliff walks
Some amazing banyan trees
White terns zoom around, usually in pairs, like aerobatic Torvill & Dean
White tern
Sooty tern
We caught up with two locals whom we had met in the Louisiades in 2014. Rex and Louise kindly showed us around with walks and snorkelling experiences.
Rex at New Gulch with many noddies and sooty terns.
An Orographic Lenticular cloud coming off Ball's Pyramid
Lord Howe Island woodhen. It was nearly extinct but the population has hugely recovered thanks to a major campaign to eradicate cats, rats and pigs on the island, and a careful breeding program. It is regarded as the most successful project to save a threatened species in the world.
Newly hatched red-tailed tropicbird chick in a nook on a cliff-top
The recently named continent of Zealandia is mostly underwater, with the major exceptions of New Zealand and New Caledonia. It split off from Australia when the Gondwanaland supercontinent broke up about 80 million years ago.
Lord Howe Island and Ball's Pyramid are on the western edge of Zealandia, with the tectonic plates moving north over magma hotspots that have generated a series of volcanoes. The older ones are now largely submerged, such as Elizabeth and Middleton reefs.
Picture the three magma hotspots (Cosgrove, Tasmantid, and Lord Howe) as being stationary, while the tectonic plates under Australia and Zealandia move north over them at about 7 cm per year, generating a series of volcanoes, with the youngest ones at the southern ends of the three tracks.
Similar volcanoes occured on the eastern edge of Australia, such as Mount Warning and the Glasshouse mountains on the Sunshine Coast.
We flew home on 16th Feb, happily refreshed by the holiday. The pilot kindly let me sit in the co-pilot's seat of the Beechcraft King Air plane which brought back memories of my flying days.