Imagine a fish so desperate to survive that it takes flight above the waves, using the open air as its last line of defense.

Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same ...

Tiny zooplankton populate a drop of water from the Sargasso Sea. These larvae will grow to become flying fish. Small gas-filled bulbs called pneumatocysts keep sargassum buoyant and close to the ...

Researchers caught a close-up video of a flying sea pig (aka, a sea cucumber), and it has what looks like 50 tiny hands.

A mysterious deep-sea fish known for having a serpent-like body and sharp fang-like teeth washed up on a Seaside beach April 22. The Seaside Aquarium received a call about a barracuda-like fish ...

In haunting footage captured about 1,604 feet (489 meters) under the sea, cameras captured the tubular crustaceans latched onto the fish’s back. Though the parasites’ presence might trigger your gag ...