The top of one of the central domes in Maug caldera, covered with several different types of corals, sponges (white encrusting towers) and algae. Notice the beautiful lilac anemone near the top right of the dome. It's nearly 30 cm (12 in) in diameter. Two clown fish are hiding within it. Image courtesy of Submarine Ring of Fire 2004 Exploration, NOAA Vents Program.
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