How to help clean up marine debris on every dive, and why scuba divers should help tackle trash.

Scuba divers and snorkelers can study the marine ecosystem in Cuba's Gardens of the Queen aboard the floating classroom M/V Oceans for Youth.

Photojournalist Jill Heinerth surveys the fragile marine habitat in the Arctic, where melting sea ice has an ecosystem hanging in the balance.

Conservation organizations are urging people to stay away from seal pups on the beach.

Palau has plenty to offer traveling scuba divers, including bumphead parrotfish spawning and night diving experiences.

Zack Rago, of the ocean documentary *Chasing Coral*, is honored as a Sea Hero by *Scuba Diving* magazine and Seiko watches.

Scientists found microplastic particles in 93 percent of the bottled water they tested, prompting a review of the health effects on humans by the United Nations.

Dive-site map makers were able to see how Hurricane Irma affected shipwrecks underwater off the coast of Florida.

A scuba diver filmed a massive wave of trash and marine debris at a popular dive site off Bali, illustrating the effect of trash pollution on ocean life.