These real-life ocean animals were so terrifying to seafarers that they became embedded in history as legendary sea monsters ...

The ocean covers more than 70% of our planet’s surface, yet we’ve explored less than 5% of it. Below the sunlit waves lies an alien world of crushing pressure, eternal darkness, and bone-chilling cold ...

The deep ocean can be a scary place, and our fears of what's lurking down there are usually justified. For every awe-inspiring discovery scientists make, it seems ...