Pretty and popular, Hanauma Bay is a victim of its own success. Formed thousands of years ago by the flooding of a volcanic crater, this nearly circular bay is home to an amazingly diverse and abundant population of fish life. It is one of the best and most popular snorkeling and swimming areas in the world. However, excessive swimming, snorkeling and scuba diving have threatened the bay’s marine residents. The area’s designation as a marine life conservation district in 1967 wasn’t enough protection, so in 1990 strict visitor limits were initiated. Hanauma Bay is another of Hawaii’s most beautiful bays, but to enjoy its treasures you’ll have to plan ahead and arrive early for a visit.

Courtesy of BestPlacesHawaii.com