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The global blue whale population is estimated to be 5,000–15,000 mature individuals and 10,000–25,000 total as of 2018. By comparison, there were at least 140,000 mature whales in 1926. There are an estimated total of 1,000–3,000 whales in the North Atlantic, 3,000–5,000 in the North Pacific, and 5,000–8,000 in the Antarctic.
The IWC presents a ‘best estimate’ accompanied by a 95% 'confidence Interval' showing a range of plausible values for the population's actual abundance. As an example (taken from the table below) the 1991/92-2003/4 abundance estimate for Southern Hemisphere blue whales is 2,300 with a 95% confidence interval of 1,150-4,500.
Determine blue whale taxonomy, population structure, occurrence, distribution, and range; Estimate population size and monitor trends in abundance; Identify, characterize, protect, and monitor habitat important to blue whale populations
The largest living animal, the blue whale (Balaenoptera musculus) which averages about 27 metres in length, has slowly recovered from whaling only to face the rising challenges of global warming,...
In a major new study, Flinders University has taken a stocktake of the number, distribution and genetic characteristics of blue whale populations around the world and found the greatest differences among the eastern Pacific, Antarctic subspecies and pygmy subspecies of the eastern Indian and western Pacific.
The largest living animal, the blue whale (Balaenoptera musculus) which averages about 27 meters in length, has slowly recovered from whaling only to face the rising challenges of global...
Populations of blue whales appear to be recovering and are estimated worldwide at between 10,000 and 25,000 animals. However, the International Union for Conservation of Nature still lists the blue whale as an endangered species .
According to IUCN Red List, the global population size of the Blue whale is 5,000-15,000 mature individuals. Currently, this species is classified as Endangered (EN) on the IUCN Red List, but its numbers today are increasing.
The largest living animal, the blue whale (Balaenoptera musculus) which averages about 27 metres in length, has slowly recovered from whaling only to face the rising challenges of global warming, pollution, disrupted food sources, shipping, and other human threats.
Blue whales have been protected from hunting by the IWC since 1966, and today some populations appear to be recovering at rates of up to 7% per year 11. But many populations appear to still be small, and others are difficult to study due to their diffuse distribution in offshore waters.