In August 2025, the scientific journal Marine Biodiversity contained a shark-themed paper that was colourful in every sense. The shark documented in it was a 6.6-ft- (2m) long nurse shark Ginglymostom

Dave Lewis recalls a trip to explore the National Museum of Wales’ collection of rare and unusual fish, and asks why these sorts of catches seem to be becoming more common

Squinting, it looks like a piece of popcorn. It’s hard to imagine this tiny orb could be a lifeline for coral reefs around the world. “That will have maybe eight or 12 eggs,” says Dr Jamie Craggs as I

Of all the strange and wonderful animals that live in the deep sea, perhaps the most tantalising are the ones that are occasionally glimpsed by deep-submerged cameras, then swim off into the darkness

Hop aboard as Daisy Dobrijevic sets sail to discover the world’s most unusual beasts.

Beneath the vast Arctic and Antarctic ice sheets, there’s a weird world unlike any other