Off the coast of Miami, divers are gearing up for a lionfish derby, organized for the first time by Diver’s Paradise, to help protect Florida’s marine ecosystems.
One travel-weary diver finds respite on a weeklong liveaboard trip. On the agenda: snorkeling with humpback whales in Silver Bank, a protected breeding area.
After sea star wasting disease wiped out more than 90 percent of the ocean's wild sunflower sea star population, divers brave the cold Alaskan waters to find traces of the remaining population.
Masters of disguise, the leafy sea dragon is one of the trickier ocean critters to spot. Here's why these mythical-looking animals dazzle us—and how to take the perfect photo.