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

These creatures are so fragile that the moment they are pulled out from the water, they collapse and disappear.

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

A young rock-pooler discovered a rare 'alien-like' winged creature washed up on a UK beach. Charley Taviner, five, was following a crab when he found what he thought was a huge lump of seaweed. But it ...

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

A young rock-pooler discovered a rare 'alien-like' winged creature washed up on a UK beach. Get any of our free email newsletters — news headlines, sports, arts & entertainment, state legislature, CFD ...

A young rock-pooler discovered a rare ‘alien-like’ winged creature washed up on a UK beach. Charley Taviner, five, was following a crab when he found what he thought was a huge lump of seaweed. But it ...