Biology of marine mammals, primarily cetaceans and sirenians. Natural history of cetaceans and manatees in the southeastern United States. Cetacean mass stranding phenomena. Use of stranded cetaceans to study cetacean biology. Food habits of cetaceans. Species of special interest: Florida manatee, bottlenose dolphin, dwarf and pygmy sperm whales, killer whale. Reproduction and growth of captive cetaceans. Biology of the bottlenose dolphin in the Indian River Lagoon, Florida.