The Rock Pool Project in Plymouth says the non-native sea hare looks "alien-like".

Dive into the depths of the ocean to discover seven rare deep-sea creatures so strange and elusive, you won't believe they ...

Charley Taviner, five, was following a crab when he found what he thought was a huge lump of seaweed. But it turned out to be Aplysia depilans - or the "Mediterranean sea hare" - a species rarely seen ...

An alien-like creature ‘from another planet’ has washed up on a UK beach and been identified as a rarely seen sea creature. Georgina and Rob Pope were walking their dog, Nona, at Pakefield, Suffolk, ...

Thousands of strangers on the internet just collectively named a deep-sea creature that lives on sunken wood at the bottom of ...

It secretes toxins and is a very unusual find ...

Sea creatures have adapted to help them thrive in extreme environments. Unusual features allow them to live thousands of feet below the surface. Underwater robots give researchers a glimpse at some of ...

A mother and daughter made an unusual discovery when walking on a Welsh beach leading to the involvement of an underwater ...