Impress your dive buddies with one of these ocean-themed Halloween costume ideas, with everything from an old-school scuba diver to a doggy diver.

Underwater photography tips for shooting silhouette photos of divers.

Underwater photographer Alex Dawson finished first place in the wide-angle category of Scuba Diving magazine's 2018 Underwater Photo Contest.

Does flash photography harm small ocean creatures? Pygmy seahorse expert Dr. Richard Smith offers guidelines for photographing these fragile creatures.

A photo competition judge gives tips for winning photo contests.

Underwater photographer Jamie Hall finished first place in the Compact Camera category of Scuba Diving magazine's 2018 Underwater Photo Contest.

Underwater photographer Rodney Bursiel is the grand prize winner of Scuba Diving magazine's 2018 Underwater Photo Contest.

The funniest photos from nature are showcased in the 2018 Comedy Wildlife Photography Awards, including funny squirrel photos and more. See the finalists and vote for your favorite.

Want to improve your underwater photography skills? Check out these top-of-the-line underwater photography expeditions in 2019. ****