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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.
World population graph of blue whales. Whaling decreased substantially after 1946 when, in response to the steep decline in whale populations, the International Whaling Commission placed a moratorium which set a catch limit for each country; this excluded aboriginal groups up until 2004.
There is a population in the waters off Chile that may constitute a fifth subspecies. In general, blue whale populations migrate between their summer feeding areas near the poles and their winter breeding grounds near the tropics. There is also evidence of year-round residencies, and partial or age/sex-based migration.
The blue whale is found throughout the world’s oceans, except for the Arctic. ... the blue whale population has dropped from what biologists estimate was 200,000 in the 1800s to approximately ...
New estimate for endangered right whale population in 2023 shows a slight increase, but scientists fear it could be temporary after a deadly 2024
Dolphins, Porpoises and Whales of the World - The IUCN Red Data Book. IUCN. Gland, Switzerland. Pop 2002 = Committee on the Status of Endangered Wildlife in Canada (2002) Assessment and Update Status Report on the Blue Whale Balaenoptera musculus archive copy at the Wayback Machine Population size and trends, p5.
Blue whales can reach 100 feet long and weigh up to 330,000 pounds, according to the National Oceanic and Atmospheric Administration. The ocean giants live in all oceans except the Arctic, NOAA ...
The pygmy right whale shares several characteristics with the right whales, with the exception of having a dorsal fin. Also, pygmy right whales' heads are no more than one quarter the size of their bodies, whereas the right whales' heads are about one-third the size of their bodies. [11] The pygmy right whale is the only extant member of its ...