Punalu'u Beach, Big Island
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Photo: PHOTO: Wide shot of Punalu'u black sand beach, Big Island Hawaii. (photo via Philippe FLEURY / iStock / Getty Images Plus)
Hawaii's most famous black-sand beach, Punalu'u is also home to endangered turtles and other wildlife that beachgoers can experience while snorkeling just below the water's surface. Swimming, hiking, camping and picnicking are also popular activities here.