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Training

How to Use an Arm-and-Clamp System for Underwater Photography

Properly tightening your set-up is key to keeping lights both attached and adjustable.

Access the Class That Helps You Avoid Scuba Diving Accidents

Learn how to avoid accidents based on 40 years of research by Divers Alert Network.

Are Manta Ray Night Dives Ethical?

How manta ray encounters are structured shapes their impact on wildlife.

Learn How to Use a Diver Propulsion Vehicle

A PADI Diver Propulsion Vehilce Speciality shows you how to use this equipment safely and quickly.

How to Photograph Cenotes

Balance your lights, focus and flash to get a great photo of the cenotes in Mexico's Yucatan Peninsula.

Beginner's Misfortune | Lessons for Life

Scuba diving without any training or understanding of dive equipment ends in disaster.

How to Protect Your Ears While Diving

In-water equalization and topside ear care both play a role in protecting your eardrums in the deep.

How Often is New Life Discovered in the Ocean?

Hundreds of new ocean species described by scientists every year—but described doesn't mean newly discovered.

ASK DAN: How Can I Prevent Gear Trouble?

The adage “an ounce of prevention is worth a pound of cure” dates back to the 18th century, but it still rings true today.