Hanauma Bay

~20 min from WaikikiSnorkelingBeachWildlifeFamily Fun

This protected marine sanctuary inside a volcanic crater is the best snorkeling on Oahu. Over 400 species of fish inhabit the reef, and the calm, shallow bay is perfect for beginners. A mandatory educational video about reef conservation plays before you enter.

Tip: The bay is closed on Mondays and Tuesdays for reef recovery. Online reservations are required and sell out days in advance.