The Physiology of Compressed-Gas Diving

The breathing of compressed gas while submerged and exposed to increased ambient pressure imposes significant homeostatic challenges on the body. This article discusses the important mechanisms of these challenges, with particular attention to the respiratory system.

Man holds onto dive line

Jardines de la Reina

Jardines de la Reina is a popular dive destination with lots of sites. Learn more about Jardines de la Reina, how to dive it and how to get there.

Split shot of crocodile with many teeth

The Edge of the Boomerang

Believe it or not: Australia is home to diving other than the Great Barrier Reef. The “Boomerang Coast” boasts great sites and animal life.

Two manta rays float over an Australian reef

Sustainable Seafood

How well do you fully understand sustainable seafood? Are you familiar with fish farms? Learn more about the changing agriculture industry and the importance of sustainable seafood.

The Many Factors in Decompression Stress

Most personal factors that affect decompression stress can be modified. Divers know their bodies best, so assess your risks with each upcoming dive.

Dragons, Pygmies and Mantas

Komodo National Park is brimming with critters — both above and below the water. One diver calls it a “wonderland.” Read more about diving the breathtaking Komodo.

Giant sea turtle smiling at camera

The Gift of Kimbe

One diver chose to document Kimbe Bay. The area boasts colorful sea life but the trip itself posed many challenges for the dive team. Learn more about their incredible story.

An aerial view of volcanic islands surrounded by deep blue water

Discovery of a Lost Battlefield

A research team locates the remains of U-576 and Bluefields. This was a major discovery as many people did not know where these boats fought or were sunk. Learn more.

Four elated-looking men gather around a laptop

Understanding Alternobaric Vertigo

Learning how to equalize ear pressure is part of every diver’s basic open-water training. Alternobaric vertigo (AV) arises from unequal pressure between the two middle ears, usually because the pressures are changing at different rates. Learn more about AV and its prevention.

Diver plugs his nose while wearing mask

Humpback Whales: Tonga and the Silver Bank

Although they are oceans apart, both the Kingdom of Tonga in the South Pacific and the Silver Bank off the Dominican Republic offer intimate encounters with majestic humpback whales. Read more about these fantastic creatuers.

A breaching humpback looks like its clapping its flippers together