Testing the Waters
Costantino Balestra, Ph.D., has spent his life coming up with groundbreaking hypotheses in research labs and applying them to the real world. Read more about the researcher, his motivation and projects.
Alert Diver Issue: Q3 2018
Anatomy of a Commercial Mixed-Gas Dive
The commercial diving industry adopted mixed-gas technology in the 1960s to overcome the limitations of deep air diving. The industry has an exemplary safety record.
How the Dive Reflex Protects the Brain and Heart
DAN® medical information specialists and researchers answer your dive medicine questions.
Foam Rolling
Sore muscles? Soothe tired and aching muscles through foam rolling exercises. This form of self-massage is a great way to boost fitness and heal your body.
Basking Sharks
The basking shark is the world’s second-largest fish. They have large gaping mouths which are used to skim the plankton-rich surface of the water. Basking sharks are slow and populations have been declining.
Kona, Hawaii
While Kona, Hawaii may have the same biodiversity or colorful corals as other dive sites, it has much, much more. One diver discusses why they enjoy diving in Kona.
A Cleaner, Brighter Future
Fishing gear debris is unfortunately common in the waters surrounding Hawaii, and it threatens green sea turtles and the endangered Hawaiian monk seal. Volunteer divers, however, have come together to restore these waters.
How to Save a Fish
In response to the declining grouper populations, conservation organizations have paired with local government to spearhead initiatives. Their efforts have worked and populations have grown.
How Old is Too Old
Dive computers and BCDs are expensive, which can make it very tempting to keep using the ones we own year after year. Remember that this is life-support gear, and it won’t last forever.
A Rising Tide
Thanks to scholarships, eight landlocked high school students were able to experience the ocean firsthand. Their experiences were part of a web-based series called “A Rising Tide.”
