Scuba diving in the Azores offers epic encounters with pelagic species such as blue sharks, sperm whales, devil rays and more.

The Turks & Caicos Aggressor II liveaboard visits the Dominican Republic's Silver Bank, where divers can swim with humpback whale mother and calf for incredible encounters.

In its nearly three decades of use, several misconceptions have surrounded the use of nitrox, most notably that divers report feeling less tired after a dive on nitrox than they would on air.

These 5 shipwrecks are now artificial reefs, drawing in animals from sharks to turtles for regular visits.

Sea Dragon

Our readers ranked the best places to scuba dive with shipwrecks, including scuba diving in Truk Lagoon, Hawaii, the Bahamas and more.

The best things to do in Belize's Ambergris Caye, including the top dive sites for scuba divers.

The best scuba diving in Lake Champlain includes historic wooden shipwrecks.

What it's like to swim with orcas—or killer whales—in Norway's Troms region aboard *Sula* liveaboard.