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, […]
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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 […]
Trouble in Galápagos
DAN EMERGENCY SERVICES RECEIVED A CALL via satellite phone from a liveaboard anchored off a remote island in the Galápagos. A DAN member was concerned about their bunkmate exhibiting symptoms […]
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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 […]
Oxygen Cleaning of Dive Gear: A Two-Part Series
IN THE PREVIOUS ARTICLE, we settled on the recommendation that equipment used to control any breathing gas mix containing 25 percent oxygen and above at typical scuba cylinder pressures should […]
Popping the Question: What is a DSMB?
SURFACE MARKER BUOYS (SMBS) AND DELAYED SURFACE MARKER BUOYS (DSMBS) are common and essential safety devices. These brightly colored, inflatable tubes, sometimes called safety sausages, are critical pieces of equipment […]
The Ocean Less Traveled
TALK TO ANY HUMAN UNDER THE AGE OF 13, and they have probably been asked, “What do you want to be when you grow up?” I was just 3 years […]
Diving With My Dad
I WAS 13 YEARS OLD THE FIRST TIME I WENT SCUBA DIVING. My family was on a trip to Cancun, and my dad took me and my sister, Carrie, who […]
Destination Antartica
WHEN I STARTED DIVING, I fell in love with colorful coral reefs and marine life. If you had told me that Antarctica would someday become a favorite destination, I might have laughed and said I’d never …
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