The colossal squid, the world's largest squid species, was caught on video for the first time swimming in its natural habitat ...

Two research expeditions have captured the first footage of two squid species — a colossal squid and a glacial glass squid — ...

The creatures cruised the world’s oceans with features we often associate with marine mammals, such as coats of blubber and ...

Striking historic drawings of the Great Barrier Reef found in an old, waterlogged book capture the spell this underwater world has put on people for centuries.