The Revillagigedos Islands

If you like being dwarfed by marine life, Socorro is the place for you. This seasonal destination offers incredible opportunities for communing with whales, mantas sharks, dolphins and more.

Orange fish follow a giant manta

Tobacco, Marijuana and Asthma

Asthma affects smokers — of tobacco and marijuana — differently. Asthma also impacts divers. Read more about the link between asthma and smoking.

Pot bud and a blue pot pipe


Cozumel is an easy-to-get-to destination and offers stunning views for divers. Cozumel has a lot to offer both under and on top of the water. Learn more about diving in Cozumel.

Colorful corals and sponges with a diver swimming nearby

Preventing Breathing-Gas Contamination

Breathing-gas contamination, although rare, can happen. Sources of contamination vary, but they are important to know. Get the inside scoop on breathing-gas contamination.

Left hand holds a breathing gas measuring device

Mangroves & Seagrass

Mangrove forests and seagrass meadows make for interesting snorkeling in their own right, and they’re essential for healthy coral reefs. What’s so special? Read more!

Red mangrove roots plow into water

Prepare to Get Found

Diver Jim surfaced before the rest of his group and unintentionally drifted in the water — separating him from the boat. Read more about how to play an active role in your rescue.

Diver wades next to red diver marker at sunset

Back to Basics

Decompression illness (DCI) is a serious condition, but what is it exactly? Get the basics surrounding DCI including prevention, available treatments and more.

Female diver peeks through coral formation

Ocean Views 2014: The Power of Imaging

Ocean Views 2014 displays some extraordinary images of nature by some of the world’s most talented visual artists. Read and view more from Ocean Views.

Green turtle sucks on a jellyfish