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blue whale population

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Blue whale. Disturbance caused by whale-watching activities. Credit: Adapted from Sears, R. and J. Calambokidis. A single Blue whale can consume as much as four tons of krill in a day. Whales do not reproduce quickly, and were unable to cope with the rate at which they were being hunted. Range: Blue whales are found in all oceans and are separated into populations by ocean basin in the North Atlantic, North Pacific, and Southern Hemisphere. This is the Northeast Pacific population of the northern blue whale. Get involved with the Habitat Stewardship Program for Species at Risk (HSP) or another conservation organization. Northwest Atlantic blue whales are generally found in waters off eastern Canada: in the northern Gulf of St. Lawrence, off the coasts of Nova Scotia and Newfoundland, and in the Davis Strait. It also aims at locating and mapping krill concentration areas which are important feeding grounds for blue whales. The baleen act as strainers, catching any krill or other planktonic organisms in the water; these are then swallowed. Recovery Strategy for large whales (blue, fin, sei, North Pacific right whale), Habitat Stewardship Program for Species at Risk, Report on the Progress of Recovery Strategy Implementation for Blue, Fin and Sei Whales (, Action Plan for Blue, Fin, Sei and North Pacific Right Whales (, Multi-species Action Plan for Gwaii Haanas National Park Reserve, National Marine Conservation Area Reserve, and Haida Heritage Site, Canadian Science Advisory Secretariat (CSAS) publications. The Blue Whale population in the Northwest Atlantic was designated as Endangered by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) in May 2002. California's blue whale population has recovered to near historic levels, according to a new Marine Mammal Science study. Past commercial whaling of Blue Whales is the main factor responsible for the population decline. The blue whale population was decimated through the 19th and early 20th centuries, reducing their population by as much as 97 per cent, according to some estimates. The Quebec-Labrador Foundation has a marine species at risk observer program where fish harvesters report blue whale sightings. During this time, it is estimated that whalers killed up to 99% of blue whale populations [3]. As an example, the abundance estimate for Southern Hemisphere blue whales is 2,300 with a 95% confidence interval of 1,150 - 4,500. Blue whales are among Earth's longest-lived animals. The international agr… Blue whales generally dive for five to 15 minutes, although submersions for as long as 36 minutes have been recorded in the St. Lawrence. Some of the biggest individuals may eat up to 6 tons of krill in 1 day. Commercial whaling historically carried out in the Atlantic reduced the population by about 70%. Committee on the status of endangered species in Canada. The Pacific population is found off the west coast of Canada; it migrates past Vancouver Island in spring and fall. Humpback whales - several populations are going up consistently every year. In the Southern Hemisphere there seem to be two distinct subspecies, the Antarctic blue whale and the little-studied pygmy blue whale. However, the International Union for Conservation of Nature still lists the blue whale as an endangered species . Scientific name: Balaenoptera musculus One quarter of its entire length is made up by its head. Internationally, blue whales are protected by the International Whaling Commission; the blue whale is also listed by both the International Union for Conservation of Nature and the Convention on International Trade in Endangered Species of Wild Fauna and Flora. Throughout the North Pacific between 1910 and 1965, commercial whalers harvested at least 9,500 Blue Whales, some of which were caught by shore-based whaling stations in British Columbia from the early 1900s to 1965. The International Whaling Commission catch database estimates that 382,595 blue whales were caught between 1868 and 1978, including 7,973 in the North Pacific (2.09%), 10,442 in the North Atlantic (2.73%), 5,383 in the South Pacific (1.41%), and in the Southern Ocean, 13,022 pygmy blue whales (3.40%) and 345,775 Antarcticblue whale… Photo credit: Gary TaylorSource: DFO, Newfoundland and Labrador Region. 38 p. The blue whale is the largest animal on Earth today—and the largest known to have ever existed. The calves may be at risk of predation by large sharks and orcas. Past commercial whaling of Blue Whales is the main factor responsible for the decline in the animals' population. Stewardship initiatives are ongoing through partner organizations with the support of the Species at Risk Habitat Stewardship Program. And blue whales - we think they're going up. In the North Pacific, whaling of this species was prohibited in 1966. Living between 70 and 80 years, Blue whales reproduce every two or three years. The Blue whale is a rorqual whale—one of a group that has expanding grooves in the skin of the neck; these allow it to take in huge volumes of water while feeding. An action plan is currently being developed. Taxonomy: Mammals (marine) Scientific name: Balaenoptera musculus To date, researchers have not been able to determine why the whales make these calls. The blue whale is a rorqual whale—one of a group that has expanding grooves in the skin of the neck; these allow it to engulf huge volumes of water while feeding on krill. Past commercial whaling of Blue Whales is the main factor responsible for the population decline. The total number of blue whales in the Northwest Atlantic population is unknown, but it is estimated that it does not exceed 250 adults. It can emit sounds at up to 186 decibels—46 decibels louder than a jet aircraft. For more information, visit the Species at Risk (SARA) Public Registry Profile. The primary and preferred diet of blue whales is krilltiny shrimp-like animals. In the North Atlantic Ocean, blue whale range extends from the subtropics to the Greenland Sea. They are the loudest animals on Earth and are even louder than a jet engine. Pre-whaling blue whale populations had about 350,000 individuals [3]. Blue whales live in every one of the world’s oceans. It is also protected under the Marine Mammals Regulations, which fall under the Fisheries Act. Photo credit: Gary TaylorSource: DFO, Newfoundland and Labrador Region. Top Region: Pacific, Blue whales seen by a fishery officer during an air patrol at the end of September off the coast of British Columbia. A recovery strategy has been developed for this species with the long term goal of reaching a population of at least 1,000 mature blue whales. These acoustic and sightings data will be used to model blue whale critical habitat in this region. Population Population threats. Despite its name, the Blue whale is actually coloured dark and light grey; every whale has a unique pattern of mottling that makes it identifiable. Carried out in the animals ' population also protected under the Fisheries Act into their mouths and then it... The Antarctic blue whale: Gary TaylorSource: DFO, Newfoundland and Labrador.... As four tonnes in a day 200 tons ( approximately 33 elephants ) residence critical. Fallen quite low at between 10,000 and 25,000 animals marine Mammals 2,300 with a 95 % confidence of. 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