Getting enough oxygen in the water can be hard work. While fish and many other aquatic animals take air directly from the water through gills, other animals find ingenious ways to drag air bubbles ...

Air-breathing fish that can hop and walk across the floor on their fins hint that walking may have evolved underwater before such animals began migrating on to land, scientists find. The distant ...

Fish can indeed suffocate, despite living in water. Their gills, vital for extracting oxygen, require a constant flow of ...

Ashlee Lillis’ interview subjects don’t talk. But they have plenty to say through grunts, growls, clicks and other odd noises. “I put my hydrophone — which is our underwater microphone — on the end of ...