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

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 ...

The alien-like creature is known as Aplysia depilans, or the 'Mediterranean sea hare', a species rarely seen in the UK.

A RARE sea creature has been found by a little boy on a popular UK beach. The adventurous five-year-old stumbled up the ...

A young rock-pooler discovered a rare 'alien-like' winged creature washed up on a UK beach. Charley Taviner, five, was ...

A young rock-pooler discovered a rare ‘alien-like’ winged creature washed up on a UK beach. Charley Taviner, five, was ...

Green crabs feed aggressively on native shellfish species, ranging from mussels to clams and even lobsters. This invasive ...

Megalodon usually gets all the attention when it comes to sea monsters, but ancient oceans were full of predators just as ...

Scientists from the California Academy of Sciences described 72 new species last year, from elegant birds to strange sea slugs.

With its vivid blue float and glowing, radiating tentacles, the blue button jelly looks more like a creature from science fiction than a living organism. Found drifting on the surfaces of warm oceans, ...