Crystal-clear, azure waters and warm year-round temperatures make Key West one of the top destinations for snorkeling in the U.S. Just 5 miles offshore, you'll find a living coral barrier reef ...

Two of the most popular diving and snorkeling locales are listed below: Hosting a kaleidoscope of fish, sea turtles and humpback whales, Cairns' reefs are teeming with wildlife. Known locally as ...