cetacean species

Cetacea is an infraorder that comprises the 89 species of whales, dolphins, and porpoises.

The USS Enterprise NCC-1701-D Blueprints also show several large cetacean tanks within the saucer section. The dwarf sperm whale is a sperm whale that inhabits temperate and tropical oceans worldwide, in particular continental shelves and slopes. The short-beaked common dolphin is also abundant in the Black Sea, Gulf of Mexico, and Red Sea. Fin whales are present seasonally in the central and southern Adriatic. (TNG: "Yesterday's Enterprise"), Dolphins were present aboard the Enterprise-D in some capacity. It is the only benthic feeding baleen whale, filtering small organisms from the mud of shallow seas.

The number of recognized cetacean species and subspecies is being continually revised and re-examined on the basis of new scientific data. [21]. As its name implies, it stays close to coastal areas or river estuaries, and as such, is the most familiar porpoise to whale watchers.
It is commonly known as the Monk dolphin among Taiwanese fishermen. They allow the mouth to expand immensely when feeding. The genus name Mesoplodon comes from the Greek meanings of meso- (middle), - hopla (arms), - odon (teeth), and may be translated as 'armed with a tooth in the center of the jaw'. The sperm whale characteristically has a large, squarish head one-third the length of its body; the blowhole is slightly to the left hand side; the skin is usually wrinkled; and it has no teeth on the upper jaw. The toothed whales are a parvorder of cetaceans that includes dolphins, porpoises, and all other whales possessing teeth, such as the beaked whales and sperm whales. Three of these species have limited ranges; the killer whale (Orcinus orca) is present in the Strait of Gibraltar, the rough-toothed dolphin (Steno bredanensis) in the Levantine basin and the harbour porpoises (Phocoena phocoena relicta) in the Aegean Sea. In 2368, Geordi La Forge took the Ferengi Par Lenor to see the dolphins in order to keep him from disturbing Kriosian Ambassador Briam. They are characterized by having a lower jaw that extends at least to the tip of the upper jaw, a shallow or non-existent notch between the tail flukes, a dorsal fin set far backwards, three of four fused neck vertebrae, extensive skull asymmetry and two conspicuous throat grooves forming a 'V' pattern (which aid in sucking). Cetaceans were aquatic mammals indigenous to the planet Earth and many other worlds with large oceans, such as Zadar IV. It is the only confirmed case of hybrid speciation in marine mammals, descending from the spinner dolphin and the striped dolphin.

In the Pacific, a census recorded 175,000 individuals in eastern tropical waters and 85,000 in the west. The Society for Marine Mammalogy’s ad hoc Committee on Taxonomy, chaired by Patty Rosel, has produced the official SMM list of marine mammal species and subspecies. The dwarf sperm whale is a small whale, 2 to 2.7 m and 136 to 272 kg, that has a gray coloration, square head, small jaw, and robust body. Small cetaceans. While it may be easy to find sharp, focused images of these species, identifying them in certain ocean conditions or from a distance is more challenging! They are warm-blooded, i.e., they hold a nearly constant body temperature. They concentrate in areas of increased biological productivity, such as upwellings where there is an abundant supply of food. The word "cetacean" is from the Latin "cetus", which means large sea creature. This porpoise often ventures up rivers, and has been seen hundreds of miles from the sea. Cetaceans have powerful hearts. Cetaceans were aquatic mammals indigenous to the planet Earth and many other worlds with large oceans, such as Zadar IV. It is a tough time to be a whale or dolphin. However a comparison of two surveys, one from the late 1970s and the other from 1999/2000 shows a decline in population and distribution, In China, they are endangered. Crude estimates, obtained by surveying small areas and extrapolating the result to all the world's oceans, range from 200,000 to 2,000,000 individuals, Arnoux's beaked whales seem to be relatively abundant in Cook Strait during summer, Virtually nothing is known about the abundance of Baird's beaked whales, except they are not rare as was formerly thought, Nothing is known about the relative abundance of this species or its population composition, Because of the difficulty of identifying the species the total global population is unknown, Total population is unknown but likely to be of the order of 10,000, A 2002 survey estimates there are 766 animals around, As of August 2018, the Araguaian river dolphin is not recognized by the, Estimates give values of 1,100 Indus river dolphins and maybe as few as 20 Ganges river dolphins.
There are more short-beaked common dolphins than any other dolphin species in the warm-temperate portions of the Atlantic and Pacific Oceans. Cetacean Since the 1960s, the IUCN SSC Cetacean Specialist Group (CSG) has played a major role in identifying conservation problems for the world’s whales, dolphins and porpoises. When not cited or footnoted differently, these are from the IUCN Red List of Threatened Species (v. 2014.3; data current at 20 January 2015).

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