Located 16 miles off the coast of Cape Hatteras, North Carolina, the Civil War shipwreck, USS Monitor, is protected and managed by Monitor National Marine Sanctuary and is listed as a National Historic Landmark and protected as a war grave. Monitor National Marine Sanctuary is a unique cultural treasure for the most adventurous of skilled divers.

Sitting in just 30 feet of water off Panther Point in British Columbia, the Panther is a nearly 200-year-old three-masted clipper wreck teeming with marine life.

When most people think of scuba diving, they imagine the vast, deep blue open ocean, a topical coral reef or perhaps a jungle-like kelp forest. While those more commonly explored waters certainly have their magic, nearshore dives offer a unique and captivating experience that's not to be missed.

West Greenland is where letters to Santa wind up every year, but it's not in some workshop where you'll find the magic. The real gifts are below the water's surface.

Every year, spawning salmon return to the same spot in Alaska as a part of their final act—here's what happens

There's much more to the relationship between an anemonefish and a giant sea anemone than a sense of camaraderie. Here's how they keep each other alive.

Scalloped hammerhead sharks and wedgefish are facing extinction, partly due to being caught and sold for their fins. This program gives local fishermen incentive to set those species free.