Quite startling in its blackness, Kehena Black Sand Beach in Hawaii is unlike any other tropical beach you are likely to have visited. Located in the Puna district on Big Island, this long, narrow crescent-shaped beach if one of very few “clothing optional” beaches on Hawaii and is popular with local and visiting naturists. The beach is sometimes also referred to as Dolphin Beach because it is regularly frequented by spinner dolphins. The black sand beach was formed fairly recently when lava flowed down into the ocean from the island’s active volcano in 1955 – the point of the lava flow can still be seen at the eastern end of the beach.

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