Protecting Hawai‘i’s Fishes

CHARLES DARWIN’S FIVE WEEKS IN THE GALÁPAGOS Islands were crucial to the development of his theory of evolution, likely due to the Galápagos having the world’s second-highest proportion of endemic (unique to one location) species.

green sea turtle being cleaned of algae by yellow tangs

Member Profile: Breathing-Gas Giant Jess Stark

FROM THE ARCTIC CIRCLE TO ANTARTICA, if you’ve ever taken a breath from a scuba cylinder, there’s a good chance that cylinder was filled using a Stark Industries breathing-air compressor. For half a century dive operators and fill stations around the world have been using Stark compressors to fill divers’ tanks, trusting their quality to meet daily demands.

Jess Stark

Underwater Cave Photography

AS I FLOAT IN THE SOFT DARKNESS of a flooded cave, a tunnel leading away from me catches my eye. Like a mountain trail, the passageway offers spectacular views, physical challenges, and exhilaration. As I exhale into the water, I feel a dissolution of self. My goal as a photographer is to convey that sensation in a photo.

Photographing underwater caves in Mexico

Diving for Artificial Reefs

IN JUNE 2019 I MADE MY FIRST DIVE after eight months of repairing our home in Mexico Beach, Florida, from the ravages of Hurricane Michael. After finally recovering from the storm, I resumed doing underwater surveys as a volunteer diver for the Mexico Beach Artificial Reef Association (MBARA).

diver at memorial reef

The Eclectic Vision of Renee Capozzola

THE ROUTE TO PROMINENCE IN UNDERWATER PHOTOGRAPHY is varied and constantly evolving.

Over-under of paddletail snapper school at sunset

Diving and Dying for Lobster

WITH CLEAR, WARM WATER, dozens of excellent dive sites, and the second-largest barrier reef in the world nearby, Roatán, Honduras, is a premier dive destination and a popular stop on […]

Injured divers at Cornerstone Clinic

Remaining Calm When out of Air

Proper out-of-air training and practice are important so a situation like this will not be the first time a diver is exposed to it. Had I not had the level of skill repetition positively enforced by my collegiate instructors, this event could have easily spooked me out of cave diving.

Meredith Tanguay and James Mott demonstrate the correct execution of single-file gas sharing in an overhead environment

Physioshark Team Studies Climate Change Impacts on Sharks

FOR 450 MILLION YEARS some shark species have been apex predators in the aquatic world, helping to balance the fathomless yet fragile marine ecosystem. But even with all their instinctual knowledge we see more and more species on our endangered lists. 

A team member releases a baby shark

Avoid Diving with Earplugs

A TOPIC THAT COMES UP FREQUENTLY when discussing dive safety is the use of earplugs. Are they safe to use while diving? Does DAN have any recommendations?

Inserting earplug

The Art of Dive History

THE UNKNOWN HAS ALWAYS BEEN FERTILE GROUND for mythology, and the oceans have long inspired legends and tales of gods and monsters.

Les Burke is wearing a full Mark V hardhat and suit