Hanauma Bay State Park – Hours • Pricing • Activities

Hanauma Bay History Hanauma Bay Nature Preserve was declared a protected marine life conservation area and underwater park in 1967. Formed within a volcanic cone, today Hanauma Bay offers a pristine marine ecosystem after the City and County of Honolulu laid out a plan in 1990 to restore the bay, after years of use from the millions of visitors who visit and love to snorkel Hanauma Bay.

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