DAN Dispatch: New Hand Signal Communicates Illness
Divers learn in training to avoid diving when ill, but sometimes people become ill during a dive.

Divers learn in training to avoid diving when ill, but sometimes people become ill during a dive.
Interest in breath-hold diving, also known as freediving, has grown exponentially over the past decade. Most individuals who enjoy watersports have held their breath underwater at some point, but most do so without formal training or awareness of the known dangers despite the ready availability of this lifesaving information.
We’ve all seen tragic images of suffering marine animals entangled in monofilament line or other marine debris.
Your effort to relieve joint pain involves achieving neutral buoyancy, but that requires some physical exertion. Additionally, nr-axSpa often progresses into ankylosing spondylitis with inflammation where tendons, ligaments, or joint capsules enter the bone, which can lead to spinal fusion and reduced mobility.
The small Royal Canadian Air Force (RCAF) field at Gander, Newfoundland, gained notoriety as the airport to which dozens of international flights were diverted after the terrorist attacks on Sept. 11, 2001.
Every documentary filmmaker eventually dreams of making an IMAX® film. After all, it’s the biggest, most impressive film format in the world. Who wouldn’t want to see their film on a 70-foot screen? For years I dreamed of making my first IMAX film.
A 2023 inductee into the Women Divers Hall of Fame, Taylor hopes to get people to think about little things they can do every day that collectively can make a big difference.
Jay Dean, PhD, is a professor of molecular pharmacology and physiology at the University of South Florida (USF), where he studies the effects of oxygen, carbon dioxide, and barometric pressure on the mammalian central nervous system.
Within the geographical confines of the Monterey Bay National Marine Sanctuary (MBNMS) is one of the world’s most ecologically diverse coastal marine environments.
It was a sunny day at South Florida’s Blue Heron Bridge. Two years had passed since I last dived this location, and I was anticipating a simple excursion to look at the local fish. The dive plan was to make a shore entry and allow the current to take me west down the beach.