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The large bulge on top of the porpoises head is caused by the melon. [ 12 ] [ 21 ] [ 22 ] [ 23 ] The porpoise eye is relatively small for its size, yet they do retain a good degree of eyesight.
The harbour porpoise is a little smaller than the other porpoises, at about 67–85 cm (26 + 1 ⁄ 2 – 33 + 1 ⁄ 2 in) long at birth, weighing 6.4–10 kg (14–22 lb). Adults of both sexes grow to 1.4 to 1.9 m (4 ft 7 in to 6 ft 3 in).
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.
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 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
A female bottlenose dolphin performing with her trainer. They are considered one of the most intelligent cetaceans. Cetacean intelligence is the overall intelligence and derived cognitive ability of aquatic mammals belonging in the infraorder Cetacea (cetaceans), including baleen whales, porpoises, and dolphins.
A recent survey using drones showed a 10% decline in the number of sightings of porpoises in 2024. ... of the mammals and every week the volunteers see large groups of residential porpoises in ...
Dall's porpoise (Phocoenoides dalli) is a species of porpoise endemic to the North Pacific. It is the largest of porpoises and the only member of the genus Phocoenoides. The species is named after American naturalist W. H. Dall. William Healey Dall's 1873 field notes on Phocoenoides from the Smithsonian Institution's Field Books collection