Drifting in the cobalt blue waters of Molasses Reef a diver notices something odd: On the underside of the Cheeca View (the dive boat he'd just been relaxing on), the letters HD had been painted in white on either side of the hull.

From symbiosis to mating to mouthbrooding, here are some of the coolest animal behavior photos from our 2017 Through Your Lens Photo Contest.

Henauer first caught our attention when he took home 2nd place in the wide-angle category of the 2017 *Scuba Diving* magazine photo contest.

This two-day symposium of presentations, discussions, learning, and inspiration includes some of the world's leading nature and wildlife photographers.

Farming salmon to protect wild fish sounds logical. But that's not how it works in reality.

Sand Dollar Resort, located on Bonaire’s west coast, has the site for your next marine life mixer: Bari Reef.

Shark diving in Nassau offers the once-in-a-lifetime chance to have close encounters with Caribbean reef sharks — day or night.

This "queen of the mantas" is adding yet another accomplishment to her long list of accolades. Meet Andrea Marshall, our September/October 2017 Sea Hero.

With extinction looming, scientists are trying to find — and stop — what’s killing the Gulf of Mexico Bryde’s family.