SDI was created by dive professionals from the technical-diving field, which gives the organization a unique perspective, that of teaching recreational diving through the lens of experienced technical diving. SDI’s philosophy is to take recreational scuba diving to new levels, enhancing older, maybe even outdated, diving practices by incorporating new diving technology and emphasizing safety.

Stories by SDI
Avoid Diving Accidents
Training In the Water

Six Ways to Help Avoid Diving Accidents

Most accidents result not from the inherent danger of our sport, but from diver error. Here are a few of the best ways to avoid diving accidents.

Underwater navigation

Underwater Navigation Techniques

Underwater navigation techniques are useful in any number of diving situations. By mastering them not only will you become a safer diver, but you’ll also be able to pinpoint the exact spot where you saw that pygmy seahorse.

dive buddy system

Flaws in the Dive-Buddy System

Can you remember your first open-water scuba class?

New stuff
Action Camera for Divers

The World’s First Action Camera for Divers

Designed with the help of divers, for divers, the Paralenz Dive Camera is a compact, tough camera with some ground-breaking new features.
by News Release
Ray Mutilation

Locals Take a Stand over Ray Mutilation and Slaughter

Local divers and ocean lovers in Melbourne, Australia have started a campaign in Port Phillip Bay to put a stop to illegal ray mutilation and slaughter.
by Guest Author
Best Diving in New Caledonia

Best Diving in New Caledonia

Tiny New Caledonia, in the South Pacific between Brisbane, Australia and Fiji, is a diver’s paradise. Here’s a peek at the best diving in New Caledonia.
by Kathryn Curzon

Marine Species: Frogfish

A diver and photographer favorite, frogfish have a reputation of being hard to find. What’s the best way to spot one of these distinctive fish on a dive?
by Hélène Reynaud