"Claude, give me some fun Scottish facts..."

• Loch Ness holds more fresh water than every lake in England and Wales put together. It’s so deep (around 230 m) that you could stack several big buildings in it and still not touch the surface.

• The Corryvreckan whirlpool, between Jura and Scarba, is one of the largest in the world. On a bad tide its roar can be heard miles away, and the Royal Navy once classed the strait as unnavigable.

• St Kilda has its own mini-species. The St Kilda wren and St Kilda field mouse evolved in isolation there, and the mouse is roughly twice the size of a mainland one. Soay sheep there are a feral breed little changed since the Bronze Age.

• Bass Rock turns white with birds. It hosts the world’s largest colony of northern gannets, around 150,000 of them, and from a distance the island looks snow-covered in summer.

• The Fortingall Yew in Perthshire may be 2,000 to 3,000 years old, possibly much older, making it one of the oldest living things in Europe. Legend says Pontius Pilate was born under it.

• Some of the oldest rocks in Europe are in the Outer Hebrides and the northwest Highlands. Lewisian gneiss is around 3 billion years old, from a time when complex life didn’t exist yet.

• Fingal’s Cave on Staffa is made of hexagonal basalt columns from the same ancient lava flow as Northern Ireland’s Giant’s Causeway. The sound of the waves inside inspired Mendelssohn’s Hebrides Overture.

• The Scottish primrose grows nowhere else on Earth. It’s a tiny purple flower found only on the north coast and in Orkney.

• Snow patches on the high Cairngorms and Ben Nevis often last all summer. There are people who go up specifically to measure them, and in some years one or two have survived for decades.

• Only female midges bite, and they need the blood to lay eggs. A single cubic metre of Highland air on a still evening can hold thousands of them.

• The Flow Country in Caithness and Sutherland is one of the biggest blanket bogs in the world and became a UNESCO World Heritage Site in 2024. Its peat locks away more carbon than all the UK’s forests combined.

• Scotland is still rising from the last Ice Age. The ice sheets were so heavy they pushed the land down, and parts of the country are still springing back by a millimetre or two a year.

• The Parallel Roads of Glen Roy aren’t roads. Those neat horizontal lines along the hillsides are old shorelines of a lake that was dammed by glaciers and dropped in stages as the ice melted.

• Arthur’s Seat in Edinburgh is an extinct volcano about 350 million years old. Glen Coe is the remains of an even older one that collapsed in on itself.

• The UK’s only resident orca pod lives off western Scotland, and it’s down to two whales. Both are males, John Coe and Aquarius, so the group can’t breed and will eventually disappear.

• Basking sharks gather around the Hebrides every summer. They’re the second-largest fish in the world, up to 10 m long, and completely harmless, since they eat only plankton.

• Pine martens are helping red squirrels win. Grey squirrels evolved without martens around, so they don’t recognise the danger and get eaten. The nimbler reds escape.

• Scottish wildcats, the “Highland tiger”, are among the rarest mammals in Britain. Captive-bred ones have been released in the Cairngorms since 2023 to try to save them.

• The capercaillie is the world’s largest grouse, and the males court with clicks and a sound like a cork popping. Only a few hundred are left in Scotland.

• Mountain hares and ptarmigan turn white in winter. In a mild, snowless winter they end up bright white on brown hillsides, which makes them very easy to spot.

• Palm-like plants grow in the Highlands. Thanks to the warm North Atlantic Drift, Inverewe Garden in Wester Ross grows subtropical plants, even though it’s further north than Moscow.

• Some Scottish beaches glow at night. Bioluminescent plankton light up blue when the water is disturbed, so splashing or wading leaves glowing trails.

• Wild salmon find their way home by smell. After years at sea, Atlantic salmon return to the exact river, sometimes the very stretch of gravel, where they hatched.

• Beavers were hunted out of Scotland about 400 years ago. They were officially brought back to Knapdale in 2009, and a separate population appeared mysteriously on the Tay around the same time.

Fun facts indeed!