Online Exclusives

Bahamas Photo Week 2014 Gallery

Florida Keys Bonus Gallery

Amos Nachoum's Antarctica Gallery

By Amos Nachoum

Mental Health First Aid Quiz

Lorie Laroche
Ocean Views Bonus Gallery 2014

In the Maya Underworld

Text and Photos by Brandon Cole

Exploring the cenotes
Socorro Gallery

Tetepare Gallery

untitled article

In the Finsteps of Shackleton: Diving South Georgia Island

By Jeffrey Bozanic and Lillian Yao

Hazardous Marine Life First Aid Quiz

National Marine Sanctuaries Gallery

Bahamas Gallery

Photos by Stephen Frink

Explore More of Our National Marine Sanctuaries

What's Wrong With This Picture?

Learn and test your dive safety awareness by visually reviewing pictures to find out what is wrong.
Basic Life Support and First Aid Quiz

The American Heart Association states that cardiopulmonary resuscitation (CPR) provided by a bystander immediately after sudden cardiac arrest can double or triple a victim's chance of survival. Brain death starts to occur four to six minutes after someone experiences cardiac arrest if no CPR and defibrillation occurs during that time. Test your knowledge in Basic Life Support.
Neurological Assessment Quiz

Brandon Cole Gallery

Photos by Brandon Cole

Palau Gallery

Photos by Ethan Daniels

Mexico's Majestic Megafauna Gallery

Kelp Gallery

Palm Beach, Fla. Gallery

Photos by Walt Stearns

Beach Diving: Safe Entries and Exits

By Dr. Nick Bird

Dive Accident Management & DCI Quiz

Are you mentally prepared when a diving accident occurs? Test your knowledge with Decompression Sickness/Illness and take this short, 10 questions quiz.
Beat the Bug Frenzy

By Maureen Halsema

Lobster Diving Safety
Astronauts Train for Asteroid Mission Underwater

By Maureen Halsema

Behind the Glass: Aquarium Diving

By Arnold Postell for Association of Dive Program Administrators

Are you a safe diver?

The DAN Emergency Hotline Top 10 List

By Maureen Halsema

Storm Safety Quiz

Just as you prepare an emergency action plan for diving, you should also prepare for weather-related incidents.
Alert Diver App FAQ

Ocean Views 2012 Bonus Gallery

Washington's Olympic Peninsula Gallery

By Brandon Cole

Cayman Islands Gallery

Dive Safety Myths and Misconceptions Quiz

Are we there yet?

By Petar Denoble

Rebreather technology for recreational divers.

Shifting Baselines

The Wrecks of Thunder Bay: A Photo Essay

By Stephanie Gandulla, Thunder Bay National Marine Sanctuary

History Above and Below the Waves

By Stephanie Gandulla, Thunder Bay National Marine Sanctuary

Be Prepared

By Dan Orr

Oxygen First Aid Quiz

Are you prepared?
Tuna Hästberg Iron Mine, Sweden

By Peter Buzzacott

Scuba Hollywood Myths and Mysteries Quiz

Taking a Giant Stride: Internship Opportunities

By Jenna Wiley

Unique Techniques

Bioluminescence, Snoot Photography and Pole Cams.
Assessing Water Quality

By Sean Sheldrake, Rob Pedersen and Alan Humphrey, USEPA

Online Dive Planning Tools
Bonne Terre Mine Gallery


Unique Techniques Bonus Gallery

Shooting Sharks Gallery

Cardiovascular Risk Factors for Diving Quiz

By Petar Denoble

Thermal Stress and Diving Quiz

Neal W. Pollock, Ph.D.