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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 .
This is a list of the native wild mammal species recorded in Mexico.As of September 2014, there were 536 mammalian species or subspecies listed. Based on IUCN data, Mexico has 23% more noncetacean mammal species than the U.S. and Canada combined in an area only 10% as large, or a species density over 12 times that of its northern neighbors.
Sea of Shadows is a 2019 documentary about environmental activists (Sea Shepherd), the Mexican Navy, marine scientists and undercover investigators trying to prevent the extinction of the vaquita, a species of porpoise and the smallest whale in the world, by pulling gillnets, doing research, and fighting back Mexican cartels and Chinese mafia who are destroying ocean habitats in their brutal ...
Leo DiCaprio’s Nat Geo Doc Exposes Porpoise Killings
In addition to a wide range of endemic creatures, such as the critically endangered vaquita and various species of sea urchin, it also hosts many migratory species, such as the humpback whale, California gray whale, killer whale, manta ray, Humboldt squid and leatherback sea turtle, and the world's largest animal, the blue whale.
Totoaba are long-lived and may live up to 20-25 years, but sexual maturity is usually not reached until females are seven years old and males are six years old. [8] Female and male totoaba measured length during their first sexual maturity is between 1.3 and 1.2 metres (4 ft 3 in and 3 ft 11 in). [ 8 ]
This does not occur in larger populations. In polygynous populations, where only a few males leave offspring, there is a much smaller reproducing population than if all viable males were considered. Furthermore, the successful males act as a genetic bottleneck , leading to more rapid genetic drift or inbreeding problems in small populations.
In fact, based on the way the sentence is worded, I suspect that the claim is OR, based on the vaquita being listed below the baiji in book, with the conclusion being drawn that the vaquita moved up into the most endangered spot with the extinction of the baiji. I'm going to hide the claim for now. -- Donald Albury 23:12, 3 August 2008 (UTC)