When oxygen disappears, most fish suffocate. This one ferments its own metabolism and waits months for spring beneath frozen ...

A cavity in the middle of the rockhead poacher’s skull might be used like a maraca to produce sound, new research suggests.

Mudskippers break the rules of fish biology by breathing through their skin, walking on their fins and thriving on land where ...

Long before whales dominated the oceans, Earth’s seas were home to a fish so massive it continues to challenge our ...

Sharks at the Loveland Living Planet Aquarium in Draper, Utah, glide silently behind glass walls — but just how silent is ...