SS Manasoo

NORTH AMERICA’S GREAT LAKES have long provided a natural transportation corridor to the continent’s interior. The Anishinaabe people — the region’s original inhabitants — utilized the Great Lakes for trade, […]

Brooding Anemones

UPON SURFACING, I heard a fellow diver ask, “How cute are those brooding anemones?” This observation piqued my interest because I’d never heard of this behavior despite a lifetime of […]

brooding anemones, protecting hundreds of anemone babies, bubble gum color mother, unique seal life behavior

Leopard Seal

EVERY PHOTOGRAPHER HAS A DREAM SHOT. For a long time mine was to see a particular natural predation: a leopard seal hunting a penguin in Antarctica. When I traveled to […]

leopard seal

Jennifer Hayes

READERS WILL KNOW THE BYLINE “David Doubilet and Jennifer Hayes” from scores of National Geographic magazine features. Working as a team they have photographed the wild ocean from the tropics […]

Recruiting for DAN Research

DAN RESEARCH IS CONTINUALLY LOOKING for divers, researchers, and health care professionals to volunteer to support our work. Depending on your availability and location, you might qualify as a diver […]

Underwater Photography with Compact Cameras

MANY DIVERS DON’T WANT TO TAKE LARGE digital single-lens reflex (DSLR) housings or expensive mirrorless cameras on their dives. Their goal is to capture memories to show their family or […]

Renting Dive Gear

IMAGINE RENTING A CAR, NAVIGATING TRAFFIC ON UNFAMILIAR ROADS, and then finding yourself in a heavy rainstorm — only to realize you don’t know how to operate the windshield wipers. […]

Japan’s Little Fish with a Big Heart

MANY JAPANESE DIVERS LOVE UNDERSEA CREATURES, particularly the home-grown varieties living in abundance along the country’s craggy volcanic coastlines and offshore islands. They also have an infatuation for the eccentric […]

JAPANESE DIVERS LOVE pufferfish nests, crop-circle-like sand structure pufferfish love nests, Torquigener albomaculosus, 6-foot egg nest, Amami Ōshima, UNESCO’s World Heritage List Alert Diver magazine Q4 2023

The Hamlet Dilemma

SINCE THE LATE 1800S, debate among marine taxonomists has swirled around the species status of the stately little Caribbean sea basses in genus Hypoplectrus, commonly known as hamlets. At the […]

Slow and Relaxed with Good Technique

MY DIVE BUDDY AND I planned to do a longer than usual dive one Saturday morning at Madison Blue Spring State Park in Lee, Florida. For several years and more […]

safe cave diving skills, keep calm during every cave dive, system of redundancy for every piece of critical equipment, including regulators, tanks, and lights, cave diving proper line management, touch communication in cave diving, dive buddy, underwater cave dive partner, two backup lights for cave diving, skills for emergency diving situations, dive plan for cave diving, backup lights for safe cave diving, cave system in northern Florida, dive plan, Alert Diver magazine Q4 2023Alert Diver magazine Q4 2023