Marine Biologist and PhD student Daniel Stoupin has made an amazing time-lapse video of the Great Barrier Reef's sponges and corals under high magnification, showing a world of color and shapes that highlights the biodiversity of the largest coral reef ecosystem in the world.

An exclusive Mike Scott short story from the author of the newly released dive novel "Heart of the Maya," wherein the protagonist breaks up an illegal shark-finning group in the Bahamas Written just for Scuba Diving’s readers, this is the fourth of four chapters.

Are you ready for Shark Week? Check out 15 amazing shark photos from our 2014 Underwater Photo Contest! From great whites to oceanic whitetips to hammerheads and more, we've got sharks — and the stories behind how the photographers got their stunning images.

The humpback whales of the Dominican Republic's Silver Bank are in the mood for love — whether it be romantic or motherly love.

Goliath grouper spawning off Florida's coast is an epic adventure if you're lucky enough to find the party.

We all know that we should avoid touching a reef. But are you aware of the many common reef inhabitants that are capable of inflicting a painful, and occasionally fatal, wound? Check out underwater photographer Judy G’s gallery of beautiful but dangerous underwater creatures.

An exclusive Mike Scott short story from the author of the newly released dive novel "Heart of the Maya," wherein the protagonist breaks up an illegal shark-finning group in the Bahamas Written just for Scuba Diving’s readers, this is the third of four chapters.

The video of Keller Laros’ rescue of an entangled Kona dolphin went viral last year, but protecting Hawaii’s manta rays is our July Sea Hero’s real focus.

From a distance, it looks like a huge oil spill - but when you look closer, you can see that it's actually a massive school of fish. Samples of these Northern anchovies were taken to the lab for analysis, but scientists are still unclear on why they appeared off the coast in such shallow water.