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.

WASHINGTON — Some species of shark return to the same breeding grounds for decades at a time, and live longer than previously thought, scientists studying the animals off Florida say. Scientists with ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Nurse sharks are normally ...

Anglers off Costa Rica caught a 6-foot-long nurse shark with an orange-yellow hue in a first-of-its-kind sighting, a study said and photos show. Photo from Garvin Watson, shared by Marioxis ...