Chasing Weeds
How many times have you noticed the line of weeds out of the corner of your eye and driven past, around, or through it without a second glance on your […]
Alert Diver Issue: Q1 2022
Low-Visibility Diving
WEATHER, SILTY SEDIMENT, time of day, or water movement are just a few natural factors among the range of possible causes that can influence the visibility at your dive site. […]
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 […]
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 […]
