6.These mechanisms, part of the marinemammal diving response, are adaptations to living in an aquatic environment and help during the process of sleeping.
8.A herbivorous marinemammal(Dugong dugon), native to tropical coastal waters of the Indian Ocean, Red Sea, and southwest Pacific Ocean and having flipperlike forelimbs and a deeply notched tail fin.
9."It looks to me like animals are shifting their distribution to find prey," said Tim Ragen, executive director of the federal MarineMammal Commission. "The big question is whether they will be able to find sufficient prey in areas where they are looking."