National Geographic : 1945 Sep
© National Geographic Society nuuainrime uy vv. uouer aloore Arno Atoll Reveals the Fantastic Pattern of Islands and Ringed Reefs Wrought by Coral Growth Irregularly shaped, the atoll encloses this and one other sublagoon, besides the main large lagoon seen in Plate VI. Coconut-covered islands, formed byheaps ofbroken coral skeletons, are only a few feet high throughout the Marshalls. Though many are several mileslong, none iseven amile wide.