Use this domain for mammals that live in the sea--whales and dolphins (phylum Chordata, class Mammalia, order Cetacea), seals (phylum Chordata, class Mammalia, order Pinnipedia), and sea cows (phylum Chordata, class Mammalia, order Sirenia).
Use this domain for mammals that live in the sea--whales and dolphins (phylum Chordata, class Mammalia, order Cetacea), seals (phylum Chordata, class Mammalia, order Pinnipedia), and sea cows (phylum Chordata, class Mammalia, order Sirenia).