Cuthona caerulea (Montagu, 1804)

    Photographed by Anne DuPont while SCUBA diving in 14 feet of water at Lake Worth Lagoon near Peanut Island, Palm Beach Inlet, Palm Beach Co., Florida 8/26/2007 (about 21 mm.) | Underwater photograph copyright 2008 by Anne DuPont (Delray Beach, FL).