Sleeper sharks live extraordinarily long lives and can thrive in near-freezing ocean temperatures near Earth's poles.

After Australian scientists collected data from 300 female eastern gray nurse sharks off the coast of New South Wales, they calculated updated population numbers for the critically endangered shark.

Long before Jaws, long before Megalodon, and even long before Tyrannosaurus rex prowled the land, a colossal shark patrolled the ancient seas of what is now northern Australia. New research reveals ...

A skate appears in frame motionless on the seabed and seemingly unperturbed by the passing shark. The skate, a shark relative ...

A deep-sea camera captured the first-ever shark recorded in Antarctic waters - a 10- to 13-foot sleeper shark swimming 1,608 feet below the surface.

Following several shark attacks on humans in the U.S., researchers have turned their attention toward Cape Cod, where there have been 17 recent sightings of great whites. It’s a very timely thing, too ...