A “large”-eyed sea creature swam along the ocean floor off the coast of West Africa. As the unfamiliar shape of a submersible approached, the “fast” animal darted into a hiding spot.

This is only the second time the species has been recorded while alive. “I thought it was A.I.,” says fish biologist Kory Evans.

Walking through a busy market in Vietnam, scientists scanned the stalls for a very specific “large”-mouthed fish ... distinction for evaluating the animal’s population size and conservation ...

The animals are not aliens, but giant pile worms, large marine worms that are typically found on the seafloor, but will swarm at the water’s surface to mate, Benjamin Neal, biologist and assistant ...

A rare, deep-sea fish washed ashore in Carlsbad last week and has since been turned over to biologists at the Scripps ...

The green turtle is a large, weighty sea turtle with a wide, smooth carapace, or shell. It inhabits tropical and subtropical coastal waters around the world and has been observed clambering onto ...

Its “large” yellow eyes scanned the surrounding foliage, but it wasn’t the only one searching. Visiting scientists noticed the “slender”-limbed animals — and discovered a new species.