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Introduction to Blackwater Diving

When the sun sets, the ocean comes alive with a whole new world of marine life. Here's what you can expect—and how to prepare your camera.

Can Fish Survive in Both Fresh and Salt Water?

In this edition of “Ask a Marine Biologist,” Dr. David Shiffman discusses osmoregulation and whether fish can adapt to different environmental conditions

Looking for Lost Sharks

Californian scientist David A.

Dive Hacks: Tips for Wreck Diving

Always wanted to explore a wreck, but not sure where to start? We've got tips on wreck diving from a pro that will have you down there (safely) in no time.

An Ode to Coral Reefs

Within coral reefs exists an intimate marriage between land and sea. Learn more about how these reef ecosystems have shaped our planet—and why it’s important to protect them.

Finding Common Ground Between Divers and Seabirds

Seabirds are adept divers. They just do things a bit differently than we do, since their “dive equipment” is built-in. Here’s what it’s like when these pelagic birds take the plunge.

An Unforgettable Dive: Eye-to-eye With a Magnificent Manta Ray

Scuba divers love to share their favorite tips and tales from dive trips. This column highlights some of those.

How to Take Flawless Photos of Sweetlips

Bright colors, large eyes and pouty mouths make sweetlips particularly photogenic fish. Learn these tricks to help guarantee picture-perfect results every time.