River Diving
MANY DIVERS AND NONDIVERS ALIKE envision the ideal scuba dive as a coral reef in warm, clear water surrounded by a myriad of beautiful fish. River diving, on the other […]
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Oskar Frånberg
OSKAR FRANBERG LEADS THE RESEARCH GROUP in marine systems engineering at the Blekinge Institute of Technology in Karlskrona, Sweden, and is managing director of the Swedish National Underwater Technology Center. […]
Low Platelet Count and Diving
© ISTOCK/ MPHILLIOS007 Q: I have been diagnosed with low platelets. Is it OK to dive? Before you dive, you and your doctor should consider some possible effects of having a […]
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Panic Leads to Diver Fatality
AS A WILDLIFE OFFICER, I spend countless hours on the water. As an instructor for the National Association of Underwater Instructors (NAUI), I have also spent a lot of time […]
Children and Diving
MINORS HAVE BEEN DIVING FOR DECADES, but the incidence of scuba diving injuries among them remains poorly studied. As opposed to most other outdoor recreational activities, the main challenge while […]
Shallow-Water Blackout
“DON’T YOU DO IT. END IT CLEAN. Don’t make me come get you,” I’m muttering under my breath as I kick furiously along a lane line, doing my best to […]
Helium Gas Purity: What Is Pure Enough?
THE THREE GASES GENERALLY used in recreational and technical diving are oxygen, nitrogen, and helium. Nitrogen is the most abundant and is usually the default gas, but no one seems […]
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 […]
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 […]
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