Photographer Page

Andy Mann

Bull sharks, which tend to hang out near coastal areas, can also tolerate fresh water.

The American alligator, Alligator mississippiensis, is a living archosaur that descended from ancient reptile relatives.

Caribbean reef sharks, once the most plentiful reef shark in the region, have declined in recent decades.

A snorkeler rises to the surface of the Tasman Sea. “For me, nothing says summer quite like the ocean does—bright sun above, blue water below, a watery landscape teeming with life,” says photographer Andy Mann.

In 2013 Paul Rose (above, right) led a Pristine Seas expedition to the Franz Josef Land archipelago, one of the most remote places in the world.

Jessica Cramp free dives off Rarotonga, the largest of the Cook Islands.