Underwater

After a long career, a disastrous sinking, and a half-successful salvage, this Naval vessel-turned-artificial reef ended up exactly where she was supposed to—with a little help from nature.

Six miles off the coast of Key West, a former military transport ship is now one of the largest artificial reefs in the world.

This stone bridge is all that remains of a submerged New Jersey town.

Planes, helicopters, and a shipwreck are underwater in this former limestone quarry.

Located more than 600 feet beneath sea level, this tunnel boasts the world's first undersea roundabout.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

A Buddhist temple covered in intricate designs and carvings made out of seashells and pieces of coral.

This underwater sculpture park is the basis for a manmade coral reef.