Mexico’s Sardine Run
Although striped marlins (Kajikia audax) are slower than some of their billfish cousins, their 50-mph (80-kph) speed is plenty fast for me. I try to swim alongside this stealth bomber […]
THE OFFICIAL MAGAZINE OF DIVERS ALERT NETWORK
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Fred Buyle
A STATEMENT ON FRED BUYLE’S WEBSITE briefly explains his approach to underwater photography: “To take his pictures and videos, Fred uses a simple formula: the water, available light, a camera, […]
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Underwater Smartphone Photography
LIKE ANOTHER UNIVERSE, the underwater world is full of whimsical inhabitants, sinuous sharks, and huge mammals that have always fascinated people and probably always will. As a photographer, you enter […]
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 […]
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 […]
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 […]
PFO Concerns in Dive Injury Treatment
If the diver is symptomatic and you are rendering care, then you need to treat the symptoms. Give them the highest concentration of oxygen available, and get them to definitive health care and treatment. Remember that many conditions show symptoms that may mimic DCS. Just because someone was diving does not mean they have a dive-related illness. When creating your emergency action plan, note the location of the nearest emergency room or where and how to access local emergency services.
Introduction to Swim Fitness
Swimming is a noncontact physical activity that lets you be socially distant while still receiving many health benefits. Exercising in water can increase cardiac function, reduce blood pressure and improve muscle blood flow, respiratory function and brain function. Water reduces joint impact, so you can do high-intensity exercise with little to no discomfort from impact. Swimming targets your entire body and allows a greater range of motion for joints than land-based exercise. Blood flows more freely to your upper body, while the water supports you and lowers gravity’s impact.
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