Think you know sharks? This divers guide to sharks includes species like hammerheads, great white, whale sharks and other apex predators from across the globe.

A pod of orcas, or killer whales, delighted freedivers off the coast of Cabo San Lucas, Mexico. The divers snapped some amazing photos and video of the rare encounter.

The Florida Fish and Wildlife Conservation Commission, FWC, upheld a ban on fishing the endangered goliath grouper, rejecting a limited harvest of the fish.

Scuba divers should respect these sometimes aggressive marine creatures that can sting, bite or snap if provoked.

The best dive destinations with no scuba tank required. Swim with whales in Norway, Tonga and Sri Lanka or grab your freediving gear and head to Australia to dive with fur seals.

Strengthen your marine-ID skills by learning how to identify the most common coral species.

Coral expert Nicole Helgason will write a regular column for *Scuba Diving* magazine helping you improve your coral identification skills.

These six daredevil dives promise the thrill of a lifetime — from shark encounters in the Caribbean to crocodiles and sea snakes in the Indian and Pacific.

Judy G's photography showcases the marine life you can expect to see underwater on the famed reefs of Mexico's largest Caribbean island, Cozumel.