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The historic population of California sea otters was estimated at 16,000 before the fur trade decimated the population, leading to their assumed extinction. Today's population of California sea otters are the descendants of a single colony of about 50 sea otters located near Bixby Creek Bridge in March 1938. [120]
Due to this great demand and worth of the sea otters pelt, the Russian-America Company (RAC) annual expenses was around 1000,000 rubles each year and profited over 500,000 rubles per year. [130] The fur of the Californian southern sea otter, E. l. nereis, was less highly prized and thus less profitable
By 1911, hunting for the animal's luxurious fur had reduced the sea otter population to fewer than 2000 individuals in the most remote and inaccessible parts of its range. The IUCN lists the sea otter as an endangered species. Threats to sea otters include oil spills, and a major spill can rapidly kill thousands of the animals.
[26] A colony of translocated sea otters near San Nicholas Island is showing population growth after ten years of low numbers. In 1991, only 16 individuals remained out of the original 139 from only a year prior, however, the current population is around 100 otters which follows the trend of other successful sea otter translocations.
Sea otters were once hunted for their fur, which is what lead to their dramatic decline, and they are now listed as a threatened species. It is unclear what drives 841's surfboard-aggressive behavior.
The trade boomed around the turn of the 19th century. A long period of decline began in the 1810s. As the sea otter population was depleted, the maritime fur trade diversified and was transformed, tapping new markets and commodities while continuing to focus on the Northwest Coast and China. It lasted until the middle to late 19th century.
Southern sea otters, whose population dwindled to about 50 in 1938, are managed by the Fish and Wildlife Service. They are listed as threatened under the Endangered Species Act and are protected ...
The North American river otter (Lontra canadensis), also known as the northern river otter and river otter, is a semiaquatic mammal that lives only on the North American continent throughout most of Canada, along the coasts of the United States and its inland waterways. An adult North American river otter can weigh between 5.0 and 14 kg (11.0 ...