The deep sea is home to weird and wonderful creatures that, over millions of years, have evolved specific traits to survive the extreme conditions of their habitat. These adaptations to their ...

They are iridescent, bright blue and jellylike, with stinging tentacles that dangle from their flat, oval-shaped bodies. Just 3 to 4 inches long, these alien-looking creatures use a short, clear flap ...

The vast majority of our planet remains a complete mystery, hidden beneath miles of crushing water where sunlight never penetrates. In this eternal darkness, evolution has taken a path so bizarre that ...

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 ...

Lovingly nicknamed “sea gooseberry,” it glides through waters like a squishy crystal or a blimpy iridescent water balloon. It has been observed in deep ocean trenches and coastal waters across the ...

The jellyfish-type creatures travel the ocean via clear "sails." ...