Conch snails are remarkable creatures with a set of eyes, a nose (sort of), a mouth and one foot. And because they’re slow, conches are commonly picked up and are a considered a delicacy in some regions.

A queen conch peers out of its shell.

Differentiating Coral Bleaching and Coral Mortality

Corals bleach, or turn white, when their symbiotic algae are expelled from the corals’ tissues due to stressors such as excessively warm water. Bleached corals can and do recover when favorable conditions resume.

A stark white coral is nestled in a bed of other corals

Night Drifters

Recent studies have shown larval fishes to be strong swimmers with sophisticated instincts for remaining in local waters. But exactly where they go between spawning and settlement remains a mystery.

Larval moray eel

Invisible Crystals

Polymorphic crystallization inside hoses has recently emerged as a hazard divers should be aware of. Be sure to replace old hoses, limit hoses’ exposure to high temperatures, and follow manufacturers’ maintenance recommendations.

A new black hose is being held

Dutch Springs

Pennsylvania is not known as a premier dive destination, but on the east side of the state is a gem for divers. Dutch Springs is an old quarry-turned-lake and was made into a scuba diving facility.

Rebreather diver Josh Dykeman swims through “the jet” for the first time a few months after it was sunk in Dutch Springs as a new underwater attraction.

DAN Member Profile: Deano Cook

Tattoo artist Deano Cook is also an accomplished painter and underwater photographer. The DAN member discusses how he got into scuba diving and what he enjoys about the sport.

Tattoo artist Deano Cook wears scuba gear

Studying Deep Reefs and Deep Divers

Papahānaumokuākea Marine National Monument (PMNM) in the Northwestern Hawaiian Islands is the largest marine conservation area in the United States and one of the largest in the world. Studying the biodiversity of the Hawaiian archipelago using scuba has given scientists a unique opportunity to monitor the physiological impacts of deep dives and thus expand our knowledge of diving science, particularly decompression risk.

Researcher photographs coral and fish

Member to Member: Giving Back

An ophthalmologist set up a team to perform eye surgeries in Grenada as a way to give back to the local community. More than 100 children received eye exams.

An ophthalmologist performs an eye test on a little girl in Grenada

The Restoration Revolution

Coral restoration projects are currently underway in the Florida Keys to help rebuild these reefs from the ground up. Coral nurseries off the coast of Florida, grow and later transfer corals.

Elkhorn corals sit at the bottom of the sea