Used Rebreather Scrubber Disposal
Sorb, or scrubber, plays a critical role in rebreather diving, as it is responsible for removing carbon dioxide (CO2) from the diver’s breathing gas. Small granules or pellets absorb exhaled […]
THE OFFICIAL MAGAZINE OF DIVERS ALERT NETWORK
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Homemade Dive Gear
The “Historic Dive Helmets” article from the Second Quarter 2024 issue of Alert Diver triggered memories of my father, Burton Stewart, and his best friend Leno Prestini. In 1935 they crafted their […]
Blue Dragons
Equipment: Sony a7RV camera, Sony 28-60mm lens at 49mm, a Nauticam WACP-C wide-angle conversion port, Nauticam housing, Retra Pro X strobesSettings: 1/250 sec, f/22, ISO 400Location: Sea of Cortez, Baja California […]
California’s Channel Islands
It’s 5 p.m., officially boarding time, and the floodgates have opened. Eager, impatient divers synchronously emerge from their cars and begin to haul carts full of gear down the dock. We’re right there with them, jostling to get a prime spot for our tanks.
Mangrove Forests
Mangroves matter. They are unique, complex habitats that guard shorelines. They connect the land to the sea, house a diverse range of animal and plant life, and reduce the impacts […]
Hazardous Marine Life
In the last issue of Alert Diver we shared the harrowing story of an attack on a fossil-hunting river diver by a 13-foot alligator. In this issue we’re bringing you more educational articles related to hazardous marine life encounters.
Championing Dive Safety in Indonesia
Indonesia’s archipelagic beauty and marine biodiversity lure divers from around the world. As the country’s popularity as an international dive destination grows, so does the complexity of dive safety. Protecting divers is no small feat across this landscape of more than 17,000 islands, many dotted with dive sites in remote locations lacking medical infrastructure.
Developing Oxygen Toxicity Guidelines
In 1943 a hyperbaric chamber in London reached an air pressure equal to 300 feet (91 meters), and nitrogen narcosis hammered the three dry divers inside. They reached for the rubber mouthpieces of their dive gear, which delivered 100% oxygen.