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Coral 1
National Zoo Animal Keeper Michael Henley extracts a tile from a tank at the Zoo’s Invertebrates Exhibit to examine it for coral polyps—millimeter-sized corals that could eventually grow to be 10 feet wide. The 90-gallon, salt-water tank features high-wattage lights and a custom-built surge device that mimics the movement of the surf in the coral’s native Caribbean habitat. From the original 12,000, 158 larvae settled onto the specially designed tiles and formed polyps.
Photo by Jessie Cohen, Smithsonian’s National Zoo
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