The YO-257, a 175-foot long navy oiler, sits on the sand in 100-feet of water off the south shore of Oahu. You’ll have a breathtaking view of Diamond Head on your boat ride to this wreck.

Discovering the beauty of BVI is all about uncovering the unique character of each island in this unspoiled volcanic archipelago. From the culture and history of BVI’s four largest islands to the pristine natural splendor of more then 50 smaller isles, every place you drop anchor offers its own special magic.

Here are five reasons to try the Andromeda liveaboard experience.

Tahiti and her islands conjure up images of crystal clear lagoons, sunsets over lush volcanic mountains and luxurious overwater bungalows. When divers think of Tahiti and her islands they think of sharks! French Polynesia has 19 shark species in her waters out of 350 species worldwide and they have been protected in French Polynesia from the beginning of time. To the ancient ma’ohi sharks represent a protective icon in which the kind spirit of a family ancestor has been reincarnated.

Indonesia's Derawan Islands offer scuba divers aboard Aggressor's liveaboard boat run-ins with whale sharks, jellyfish and more.

Aside from being featured in some of the most notable 007 films, the wrecks at Stuart Cove's Dive Bahamas are also home to abundant and beautiful marine life.

A pod of orcas, or killer whales, delighted freedivers off the coast of Cabo San Lucas, Mexico. The divers snapped some amazing photos and video of the rare encounter.

There are scores of shipwrecks in the Great Lakes that scuba divers can explore, but these photos present them in a new light.

*Scuba Diving* Magazine's readers voted for the world's best destinations for advanced divers.