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DCS in Papua New Guinea

By David McNab

Q1 2024

I was diving with my wife, Kristy Hiltz, in remote Kimbe Bay, Papua New Guinea. We had taken all the necessary precautions and dived according to our computers. On what turned out to be our last dive, we sat on a rock ledge at 70 feet for 15 to 20 minutes and then made a slow ascent, completing a full safety stop. As I climbed onto the boat I knew something was wrong, but I thought I needed to drink water and wait for it to pass.

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Melissa Ilardo

By Madeline Coombs and Frauke Tillmans, PhD

Q1 2024

Melissa Ilardo, PhD, is passionate about working in the distinct field of genetic analyses on individuals, primarily in Indigenous populations who have adapted to unique lifestyles or environments.

Speak of the Spiny Devilfish

By Suzan Meldonian

Q1 2024

The spiny devilfish (Inimicus didactylus) is a member of the family Scorpaenidae, which also contains the venomous lionfish, stonefish, and scorpionfish. These fish conceal glandular venom-producing daggers within their dorsal, pelvic, and anal fins. Divers — especially underwater photographers who may focus on one creature while others sidle up under their legs — must be aware of these animals’ subtle defense maneuvers.

Optimal Nutrition for Diving 

By Gustavo Mauvecin, MD

Q1 2024

Scuba diving demands not only physical fitness but also proper nutritional preparation. Like with any activity, we expend energy while diving; surprisingly, the energy required for routine recreational diving is somewhat moderate. Under unusually strenuous recreational conditions, however, it’s possible to burn more than 500 calories. 

Training Is Everything in a Rescue Attempt

By Amy Arnold

Q1 2024

Many divers are proud to be comfortable in the water and sometimes push their limits on air consumption, exceed their bottom time, or take one last shot of a big fish with a camera or spear before ascending. Some of them develop reputations in the dive community for being competent divers by looking cool and experienced while taking little risks. It may start small but snowball into making poor decisions for which the price you pay is not worth the reward.

Learning from the Conception

Text by JoAnn Haack, MSE, and Francois Burman, Pr.Eng, MSc; photos by Stephen Frink

Q1 2024

On Sept. 2, 2019, the small passenger vessel Conception burned to the waterline off Santa Cruz Island, California, killing 34 people. This wasn’t the first liveaboard fire, but the fearful reactions to this deadly tragedy echoed throughout the scuba industry. Liveaboard fires that have occurred since this incident have further fueled industry concerns.

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