The Emerald Sea
British Columbia is surrounded by scuba hotspots. There are difficult currents to traverse, magnificent sea creatures, shipwrecks and much, much more.,
Alert Diver Issue: Q1 2017
Photography for a Cause
Photographer John Weller who was the primary visual architect of Ross Sea conservation. Weller documented sea life around this Arctic location.
Another Way of Seeing
Underwater pool photography has become increasingly popular. With a dive approach in mind, read how one photographer tackles pool photography and still creates artistic photos.
Effects of Aspirin on Diving
If you take aspirin everyday, what will be the impact on a diver’s risk of decompression sickness? Two DAN doctors answered a common question and provided their best advice.
Caissons, Compressed-Air Work and Deep Tunneling
Do you know how underground tunnels are made? The working spaces, or caissons, are pressurized with compress air. But in the 19th century, many laborers had an unexplained illness after returning to atmospheric pressure.
Conch
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.
Distracted While Diving
It can be easy to lose sight of depth, time and gas supply when you’re in search of the perfect image. Stay alert — don’t compromise your safety for the sake of a photograph.
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.
Flying After Pool Diving
DAN medics and researchers answer your questions about dive medicine.
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.
