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Porpoises, and other cetaceans, belong to the clade Cetartiodactyla with even-toed ungulates. Porpoises range in size from the vaquita, at 1.4 metres (4 feet 7 inches) in length and 54 kilograms (119 pounds) in weight, to the Dall's porpoise, at 2.3 m (7 ft 7 in) and 220 kg (490 lb).
The family Balaenidae, the right whales, contains two genera and four species. All right whales have no ventral grooves; a distinctive head shape with a strongly arched, narrow rostrum, bowed lower jaw; lower lips that enfold the sides and front of the rostrum; and long, narrow, elastic baleen plates (up to nine times longer than wide) with fine baleen fringes.
In Spanish, the spectacled porpoise is known as 'marsopa de anteojos', a literal translation of the English common name. [12] Recent analyses of mitochondrial DNA from 50 porpoises indicated high levels of genetic diversity that would indicate a large and stable population, or one with a wide distribution.
Spanish distinguishes the adjective mucho 'much/many' from the adverb muy 'very/quite'. Portuguese uses muito for both (there's also mui, but it is considered old-fashioned). "Mucho" is also an adverb; whereas "muy" modifies adjectives and adverbs, "mucho" modifies verbs, and specific adverbs such as "más"- which can also be a noun sometimes.
The order Cetacea includes whales, dolphins and porpoises. They are the mammals most fully adapted to aquatic life with a spindle-shaped nearly hairless body, protected by a thick layer of blubber, and forelimbs and tail modified to provide propulsion underwater. Suborder: Mysticeti. Family: Balaenopteridae (rorquals) Genus: Balaenoptera
The vaquita (/ v ə ˈ k iː t ə / və-KEE-tə; Phocoena sinus) is a species of porpoise endemic to the northern end of the Gulf of California in Baja California, Mexico.Reaching a maximum body length of 150 cm (4.9 ft) (females) or 140 cm (4.6 ft) (males), it is the smallest of all living cetaceans.
The Pacific white-sided dolphin (Lagenorhynchus obliquidens), also known as the hookfin porpoise, is an active dolphin found in the cool or temperate waters of the North Pacific Ocean. [ 4 ] [ 5 ] Taxonomy
Burmeister's porpoise (Phocoena spinipinnis) is a species of porpoise endemic to the coast of South America. [1] It was first described by Hermann Burmeister , for whom the species is named, in 1865.