From the Andaman Sea to the Coral Sea, this region offers unspoiled reefs, big animals, thrilling drifts, World War II wrecks and unparalleled macro life.

Want to see a mermaid swimming with whale sharks in the Philippines? Watch this stunning video.

Stunning video from Nat Geo: When tide and current turn a tiny bay into a bowl of plankton, manta rays in the Maldives gather for a roiling, whirling feast.

Here's a look at a trip aboard the Thailand Aggressor in the South Andaman Sea.

These human-assisted habitats act like defibrillation paddles, revving up struggling reefs and reviving declining fish populations from Florida to Indonesia and beyond.

The Koh Chang region of Thailand now boasts the largest artificial reef in the Southeast Asian country with the scuttling of the HTMS _Chang_.

Peter Hughes knows a thing or two about live-aboards, and he has a spot in the DEMA Hall of Fame to prove it. In 2011, Hughes received the DEMA Reaching Out Award for helping to evolve the live-aboard diving industry over the past three decades. That same year, after spending more than 25 years building his former live-aboard company, Peter Hughes Diving, Inc., the 40-year scuba diving veteran threw all of his expertise and energy into a new live-aboard venture, the DivEncounters Alliance

Diving can be heavenly, never more so than in the presence of one of the loveliest creatures of the underwater world, angelfish. Luckily they are found in almost all parts of the globe, as these images taken by members of [ScubaDiving.com's Forum ](http://forums.scubadiving.com/forum.php)attest.

Based on the opinions of thousands of divers from across the globe, our annual Top 100 Readers Choice Awards showcase the best scuba diving in the world.