A one-foot-long young squid was spotted swimming in the waters around the South Sandwich Islands. The footage is ...

The northern snakehead, a dangerous fish from Asia, spreads across America. It threatens local fish and wildlife. First seen ...

According to members of the Argentine National Gendarmerie, a local paleontologist confirmed the fossil was that of an Ichthyosaur – a prehistoric marine animal. True to their name, which means fish ...

Common toads can fill up their bodies with air, a ploy that sometimes works with a snake that must swallow all of the prey or ...

Upon being handled by the diver, the octopus fights back first by releasing dark-colored ink into the water, a process known ...

The fish can also breathe air, allowing them to survive for several days out of water if their skin stays moist.

Opinion: A growing movement is working to dismantle the Endangered Species Act, shifting authority to the states and ...

Researchers studying pharmaceutical pollution tracked salmon that had been exposed to anti-anxiety medication. The fish appeared to lose their inhibitions.

Marine food webs are highly complex. Until now, researchers have been unable to understand exactly how they are affected by ...