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

Shooter: Roger Steene

Photographer Roger Steene shares his story about what got him into photography. Read more of Steene’s story.

Roger Steene wears a drysuit and holds a camera, while bobbing in the water

Crown-of-Thorns and Favorable Disturbance

The crown-of-thorns starfish is considered one of the most influential invertebrate predators found on Pacific coral reefs. Read more about why this starfish is so important to reef health.

a pink crown-of-thrones starfish

Digital Workflow for Underwater Photography

When you establish a digital workflow, you’re better able to organize and access all of your great images. Learn more about an ideal workflow from one photographer.

Female diver gives OK sign to camera 800x500