Scuba Cylinder Rundown
The 11-liter aluminum 80, aptly named for its 11-liter internal volume and 80-cubic-foot (2.3 cubic meter) capacity when filled to its 200 bar/3,000 PSI rated pressure, is by far the […]
Alert Diver Issue: Q1 2022
Not Only for Diving
WHILE DAN’S SUITE OF EDUCATIONAL PROGRAMS focus primarily on diving, graduates of the courses can apply the skills and knowledge they learned to many circumstances outside the aquatic realm. My […]
Florida Keys History Underwater
Beneath the ocean waves, our underwater history provides evidence of events and people that have contributed to our maritime landscape. Research on submerged sites is an ever-evolving frontier where discoveries […]
More Than a Sore Shoulder
I REMEMBER SITTING AT MY COMPUTER while thinking about all the ibuprofen I had been popping for the past 18 hours and wondering why I still had the dull, aching […]
The Argonaut Octopus and the Jellyfish
I don’t expect to see animals much larger than my thumbnail while I’m drifting on a night dive in the ocean. So I’m surprised when a translucent skirt of tentacles […]
What Does It Mean?
A PROFESSOR OF EMERGENCY MEDICINE and researcher at the University of Maryland School of Medicine, Stephen Thom holds medical and doctorate degrees from the University of Rochester. He previously led […]
Going Up
Every night as the sun slips below the horizon, countless aquatic creatures begin migrating up from the deep in what is quite possibly the greatest show on Earth. Seeking nourishment […]
When Should the Rescue Begin?
DIVING INHERENTLY CARRIES AN ELEVATED LEVEL OF RISK because humans cannot survive underwater without specialized equipment. When things go wrong, an effective rescue is vital for a favorable outcome. Most […]
Program Spotlight: DAN Offers New E-Learning Courses
Dive safety starts with understanding the risks in diving. Prevention requires taking appropriate steps to mitigate these risks, and effectively responding to incidents requires preparation and training. Online learning is […]
Celebrating Young and Old in Turks and Caicos
A TWO-WEEK LIVEABOARD in Turks and Caicos was the first dive trip I’d taken in 18 months, and I quickly learned that this small island nation has plenty to offer […]
