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

In fact, more people have walked on the Moon than have visited the deepest parts of our oceans. In this world of constant ...

Deep in the ocean, where sunlight never reaches, live some of Earth's strangest giants. Imagine a squid as long as a bus or a crab the size of a big plate! This is called deep-sea gigantism, where ...