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

Hidden in Plane Sight

A World War II-era plane remained either undiscovered or unreported for over 60 years off the California coast. Read more about this incredible wreckage and attempts to track down more information on the plane.

18-cylinder engine of plane

Freediving Gear

Taking up freediving but have zero clue what gear you need? Freediving gear is designed to simply enhance your breath-hold diving capabilities. Learn more about the right gear.

Freediver floats above a reef

Sweet Siren Smells of Coral and Seaweed

Reefs smell. No, really! A healthy reef sends out attractive scents attracting a population of reef builders and dwellers. These newcomers are vital to the success of a reef.

The sweet reef scents have brought all the fish to the yard. They are surrounding coral outcroppings

Sargassum

Sargassum is highly dynamic and continuously circulates between the Sargasso Sea, Caribbean Sea, Gulf of Mexico and Gulf Stream. The floating sargassum vegetation creates a unique habitat for ocean life. Learn more.

A woman is holding a sargassum plant in each hand.

DAN Member Profile: Jon Landau

Jon Landau is an avid scuba diver and DAN member. He’s traveled the world for dive destinations, but his favorite will always be the Florida Keys. Read more about Landau.

Jon Landau watches a goliath grouper in Key Largo, Fla.

Step Away from the Computer

Sitting all day can have adverse affects on the body — including the weakening of certain muscles. Here are some great stretches and exercises to add into your day to strengthen those muscles.

Woman leans on a chair about to thrust her hips into air

In the Company of Squid

Squid are fascinating sea critters. They’re colorful, playful and can be found throughout the world’s oceans. Learn more about the inky squid.

Tabata Training

Tabata workouts are quick and effective. In just four minutes, you can greatly boost your cardio aerobic and muscular health. Learn more about Tabata training and score a great workout.

A female personal trainer is crawling into plank position