A great white shark expedition takes a playful turn with some Australian sea lions.

Check out some of our favorite purpose-sunk wrecks — they're just as good, and maybe even better, than the real thing.

Threatened species now have greater protection from fishing in the Coral Triangle.

What is it like to dive in a subway? A freelance photographer explores one of the world's most unusual dive sites: a flooded subway shaft in Munich, Germany.

Travel back in time for a snapshot of the Caribbean's past, and what a pristine future would look like, at Cuba's Gardens of the Queen.

The Galapagos Islands are home to some of the world's highest concentration of endemic species, and nearly 20 percent of the islands' marine species aren't found anywhere else in the world!

Starkly beautiful islands, dragons, volcanoes, azure waters, luscious reefs, and a huge and healthy biodiversity of underwater critters make diving the Komodo area of Indonesia a truly unforgettabl