The UK is home to so many incredible sea slugs, like this elegant nudibranch.

A rare breeder in the UK, this sooty-coloured bird is as at home on an industrial site as it is on a rocky cliff face.

The brown shrimp blends perfectly with its seabed home and is found all around the coasts of the UK.

A funny little fellow in his glossy black dinner jacket and crisp white bib, the puffin is instantly recognisable from its brightly coloured parrot-like bill. Puffins use their colourful bill to…

Brittle stars, sea urchins and other starfish will want to stay out of the way of this speedy carnivorous starfish!