Crustaceans

Aesculapian snake (elaphe longissima). (Photo by Michel LUQUET/Gamma-Rapho via Getty Images)

Deer-eating fish, wallabies, 6-foot snakes and scorpions? Meet the UK's most bonkers invasive species

Whether they've been accidental stowaways, purposeful relocations or zoo escapees, the UK is now home to plenty of non-native species

Are there any killer whales in UK waters?

Did you know there are just two individuals remaining in the UK’s resident orca population, which will soon go extinct?

Crab vs lobster

Crab vs lobster: what’s the difference between the common shore crab and the common lobster - and how do you tell them apart?

Lobsters and crabs are often mistaken for each other. Carys McMillan explains how to tell two of our most common species - the shore crab and European lobster - apart

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Tragic mass stranding leaves 77 pilot whales dead in Orkney

The reason for one of the biggest mass strandings in Scottish history is currently a mystery, says Mel Hobson

European freshwater crayfish

Crayfish claws back: how scientists hope to save one of the UK’s most endangered native species

Thanks to a new conservation breeding programme, we might hear the pitter patter of tiny claws in Hampshire.