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Harbour porpoises tend to be solitary foragers, but they do sometimes hunt in packs and herd fish together. [11] Young porpoises need to consume about 7% to 8% of their body weight each day to survive, which is approximately 15 pounds or 7 kilograms of fish. Significant predators of harbour porpoises include white sharks and killer whales (orcas
Among the three rescues, one (father of world's first harbour porpoise born in captivity) lived for 20 years in captivity, another for 15 years, [32] [33] while the third (mother of first born in captivity) is the world's oldest known harbour porpoise, being 28 years old in 2023. [34] The typical age reached in the wild is 14 years or less.
Spectacled porpoise: circumpolar in cool sub-Antarctic and low Antarctic waters Phocoena phocoena: Harbour porpoise: cooler coastal waters of the North Atlantic, North Pacific and the Black Sea Phocoena sinus: Vaquita: northern area of the Gulf of California, or Sea of Cortez Phocoena spinipinnis: Burmeister's porpoise: coast of South America
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 Hudson River and the New York-New Jersey Harbor Estuary is a clear nursery for this fish as well as a stronghold for the species overall: the most recent research suggests that the remaining populations in other rivers in other states are interconnected with New York's, evidenced by tracking devices.
The Otaru Aquarium has been actively conducting research activities and has produced research results in the cases of Harbour porpoise and Bearded seal births and artificial nursing. [9] Jirokichi, a male Harbour porpoise that survived until 2008, holds the record for the world's longest breeding record at 24 years. Jirokichi was protected in ...
Jack, a harbor porpoise (Phocoena phocoena) at the Vancouver Aquarium. The aquarium is also home to four harbor seals at this time, 2 females and 2 males (Jessica Seal, Donnelly, DaVinci, and Hermes). Jessica Seal was rescued from Kitsilano Beach in 2019 after being discovered to have been shot in the head by birdshot and blinded as a result.
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).