cetacean

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Related to Cetaceans: whale, Sirenia, sperm whale, order Cetacea, Mammals

cetacean

or

whale

any aquatic EUTHERIAN mammal of the order Cetacea, comprising the porpoises, dolphins and whales.

Cetaceans are completely aquatic, have lost their hind limbs during evolution and have fin-like forelimbs, often a dorsal fin and, in marked comparison with fishes, a blowhole and transverse tail fin. The young are large at birth and suckled like other mammals. Cetaceans possess an extensive outer layer of fat associated with their marine habit, have a large brain and are capable of complex communication.

cetacean

includes the marine mammals of the order Odontoceti, the whales and their congeners, the dolphins, grampuses and porpoises.
References in periodicals archive ?
Once hunted and slaughtered for their meat and blubber, all cetaceans are now protected in the Philippines by the amended Fisheries Code.
About 30 cetacean species inhabit or pass through Philippine waters, ranging from the 2.
Cetaceans become stranded many times each year all over the world.
Thus, the cetaceans aggregations registered on March 3 (especially fin whales) could be the result of any of these oceanographic processes that led to a concentration of food.
Although localized and short-term behavioral responses have been reported for some cetaceans during seismic surveys (Richardson, Greene, Malme, & Thomson, 1995; Gordon et al.
Mark Uhen has focused his work on the earliest known cetaceans (archaeocetes), which bridge the gap between the terrestrial ancestors of cetaceans and the first fully aquatic forms.
Before the 2000s, most research on cetaceans in Hawaii focused on humpback whales (Megaptera novaeangliae) (e.
Strumble Head must be among the three top places to see cetaceans in the UK with harbour porpoise seen on a daily basis all year round.
The sightings were reported by the Cetacean Population Study Team researching along the Sindhudurg coast for the past six months under the United Nations Development Programme (UNDP) project on Mainstreaming Coastal and Marine Biodiversity and implemented by the Maharashtra State Mangrove Cell.
If it is collected by cetacean [the genus of mammals which inclued whales, dolphins and porpoises] monitoring, it will undergo an autopsy, but there is a quota each year.
Almost always in motion, cetaceans spend only 20% or less of their time at the water's surface.