When History Seemingly Repeats Itself
IN 1983-84, REEFS THROUGHOUT THE CARIBBEAN, FLORIDA, AND BERMUDA experienced one of the greatest mass mortalities of a marine species ever recorded when an unknown waterborne pathogen killed more than […]
Alert Diver Issue: Q3 2022
Diving After Brain Surgery
I RECENTLY UNDERWENT BRAIN SURGERY. The surgery was successful, but now part of my skull has been replaced with mesh. My neurosurgeon is brilliant but does not know how the […]
Sherri Ferguson
SHERRI FERGUSON, MSC, IS THE LAB MANAGER at Simon Fraser University’s hyperbaric chamber, located at an altitude of 1,200 feet (366 meters) on Burnaby Mountain in the outskirts of Vancouver, […]
Emergency Oxygen
IT WAS A BEAUTIFUL, WARM SATURDAY IN THE PACIFIC NORTHWEST. We were conducting two checkout dives for an advanced open-water course at a popular dive site in Puget Sound. I […]
Teaching Rescue: Am I Qualified?
WHEN ASKED TO DESCRIBE THEIR FAVORITE COURSE, many divers will discuss the challenges and triumphs they experienced during their rescue class. Instructors often describe rescue as the most rewarding course […]
