Red pencil sea urchin (Heterocentrotus mammillatus), Molokini crater, Maui, Hawaii, United States of America, Pacific

big island color image day hawaii horizontal molokini marine life natural world nature ocean outdoors red sea urchin sea urchins seabed seas urchin urchins underwater water maui oceans coral corals coral reef coral reefs reef reefs united states of america usa pacific sea red pencil sea urchins red pencil sea urchin pencil sea urchin pencil sea urchins heterocentrotus mammillatus