Grey reef sharks form lasting ‘friendships,’ scientists find, rarely straying into outside groups

Sharks have a reputation for being heartless killers, but at least one species forms long-lasting ‘friendships,’ scientists have discovered. Grey reef sharks are swift, large-eyed predators that frequent coral reefs in the Pacific and Indian Oceans. They often head out to the open water at night to hunt. But during the day, they return to … Read more