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.

Palau's excellent scuba diving earned it a number awards in our annual Top 100 Readers Choice Awards.

Love historic shipwrecks? Read about the City of Chester, which NOAA recently discovered in San Francisco Bay. This Gold-Rush-Era steamship was an amazing discovery off the Golden Gate Bridge, and touts fascinating maritime history.

Since 2001, the Digital Shootout has pulled together the most advanced staff of underwater experts for a week of learning the latest in gear and shooting techniques. Our on-site staff includes the top level experts at Backscatter, Aquatica, Nauticam, Light & Motion, Canon and more.

Meet Bonaire's underwater supermodels — arrow crabs! These curious creatures make excellent photo subjects, looking head-on into the camera lens.

Divers Discount Florida has been in the dive business in Fort Lauderdale for over 30 years.

Have you seen the horror-comedy film Piranha? If you're interested in diving the famous lake (free of flesh-eating fish, of course), then Lake Havasu is for you! The expansive lake located on the California-Arizona border, is like a freshwater scavenger hunt for scuba divers.

Dive into the bizarre and beautiful world of nudibranchs with this amazing photo gallery compiled from Scuba Diving Magazine's 2014 Photo Contest submissions!