MSC 350 Lecture Notes - Lecture 2: Heat Transfer, Parasitic Drag, Biogeography
13 Sep 2016
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Document Summary
Can be direct (physiology) or indirect (distribution of prey) Often seen in latitudinal bands only in one hemisphere. Developing field particularly for deep water species: specifics. Migratory species, some species migrate more than any other mammal. Migrate for food and energy, and also for mating, calving, and nursing. Bowhead whale exclusively arctic; gray whale limited to shelf water but migrate; blue/fin/sei cosmopolitan. Sperm whales deep water, wide latitudinal range. Beaked and bottlenose dolphins deep water, cryptic, antitropical. Blackfish wide range, antitropical, orcas are found everywhere. River dolphins occupy 5 of worlds largest tropical rivers. Extinct stellar"s sea cow was cold water tolerant. Dugongs: marine, live in sea grass habitats in indo-west pacific, sheltered warm water. West indian manatee: need access to aquatic plants, aquatic or marine, survive on coasts. Walrus: patchy, northern circumpolar, pacific, atlantic, russian arctic. Otariids: low latitudes, cool temperature and subpolar, fur seals heavily affected by hunting but spread out, sea lions.
