Hanauma Bay Nature Preserve, one of the most stunning natural resources in Hawaii, is reaping the benefits of over a decade of moves to restore its unspoiled marine ecological unit. Hanauma Bay is a secluded marine life conservation area and one of the world's best bays for novice snorkelers. Within the bay's untouched and clear waters, visitors can swim through a spectacular coral reef with more than 450 species of pulsating tropical fish, a quarter of which are native to Hawaii. A snorkelling tour in Hanauma Bay provides that classic Hawaiian beach feeling that brings tourists from around the globe to the white sands of Oahu.