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| Blue Whale
Endangered
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The world's largest mammal | ||||||||||||||||||
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| Balaenoptera musculus Linneaus, 1758 | ||||||||||||||||||
The Blue Whale (Balaenoptera musculus) is a mammal which belongs to the baleen whales suborder. They are filter-feeders, using their baleen to strain plankton out of the seawater. The Blue Whale is the largest animal known to have ever lived, at up to 30 meters in length and 150 tons or more in weight.
The blue whale has a tiny dorsal fin, visible only briefly during the dive sequence. It has a spectacular 9 m vertical single column blow. Its lung capacity is 5,000 litres.
The Blue Whale is one of seven species of whale in the genus Balaenoptera. Two subspecies have been recognised. The species is divided into three subspecies: B. m. musculus, the north Atlantic and north Pacific populations, B. m. intermedia, the Southern Ocean population and B. m. brevicauda which is a small whale also known as the Pygmy Blue Whale.
The specific name musculus is the Latin for muscle or mouse.
The Blue Whale is believed to be the largest animal ever to have lived on Earth. The largest creature known from the dinosaur era is the Brachiosaurus of the Mesozoic, which is estimated to have weighed up to 80 tons. There is some uncertainty as to the biggest Blue Whale ever found. Most data comes from Blue Whales killed in Antarctic waters during the first half of the twentieth century and was collected by whalers not well-versed in standard zoological measurement techniques. The longest whales ever recorded were two females measuring 33.6 m and 33.3 m respectively. There are some disputes over the reliability of these measurements, however; the longest whale measured by scientists at the American National Marine Mammal Laboratory (NMML) was 29.9 m long—about the same length as a Boeing 737 aeroplane.
A Blue Whale's head is so wide that 50 people would be able to stand on its tongue. Its heart is close to a size of a small car. A human baby could crawl through a Blue Whale's arteries. A newborn Blue Whale calf weighs more than an adult elephant and is 25 feet (7.6 metres) long. During the first 7 months of its life, a baby Blue Whale drinks approximately 100 US gallons (379 litres) of milk every day. Baby Blue Whales also gain weight fast: 200 pounds (91 kg) every 24 hours.
Blue Whales are very difficult to weigh on account of their massive size. Most Blue Whales killed by whalers were not weighed as a whole but cut up into manageable pieces before being weighed. This caused an underestimate of the total weight of the whale due to loss of blood and other fluids. Even so, measurements between 160 and 190 tons were recorded of animals up to 27 m in length. The weight of a 30 m individual is believed by the NMML to be in excess of 200 tons. The largest blue whale to date is a female that weighed 389,760 pounds (176,792 kg).
Blue Whales are not easy to catch, kill and retain. Their speed and power meant that they were not often the target of early whalers who instead targeted Sperm and Right Whales. As the number of these species declined, whalers eyed the meaty prize of the largest baleen whales, including the Blue Whale. In 1864Events January March January 21 Maori Wars: The Tauranga Campaign starts. February 27 American Civil War: The first Northern prisoners arrive at the Confederate prison at Andersonville, Georgia. March 1- Alejandro Mon Menendez takes office as Prime Minist Norwegian Svend Foyn equipped a steam-powered boat with harpoonA harpoon is a long spear-like instrument used in fishing to catch fish or other aquatic animals such as whales. See also: whaling More info on harpoons can be found here For the anti-ship missile, see AGM-84 Harpoon .s specifically designed for catching large whales. Although initially troublesome, the method caught on, and by the end of the nineteenth century stocks of Blue Whale in the North Atlantic had diminished.
Killing of Blue Whales spread rapidly across the oceans and by 1925Centuries: 19th century 20th century 21st century Decades: 1870s 1880s 1890s 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s Years: 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 See also 1925 in aviation 1925 in film 1925 in literature 1925 in mu, the United StatesThe United States of America also referred to as the United States U. America ¹ or the States is a federal republic in central North America, stretching from the Atlantic in the east to the Pacific Ocean in the west. It shares land borders with Canada in, BritainThe United Kingdom of Great Britain and Northern Ireland is a state in Western Europe, usually known simply as the United Kingdom the UK Britain or less accurately as Great Britain . The UK was formed by a series of Acts of Union which united the formerly and JapanJapan (, Nippon/Nihon literally "the origin of the sun") is a country in East Asia situated on a chain of islands east of the Asian continent on the western edge of the Pacific Ocean. The largest of these islands are, from north to south, Hokkaido , Honsh had joined NorwayThe Kingdom of Norway is a Nordic country west of Sweden on the Scandinavian Peninsula. It has a very elongated form and has an extensive coastline along the North Atlantic Ocean, where Norway's famous fjords are found. In addition to Sweden, it borders R in chasing whales on 'catcher boats' that caught the whales and handed them onto huge 'factory ships' for processing. In 1930, forty-one ships killed 28,325 Blue Whales. By the end of World War II populations had rapidly depleted and in 1946 the first quotas restricting international trade in whales were introduced. These were ineffective because of the lack of differentiation between species. Rare species could be hunted equally with those found in relative abundance. By the time Blue Whale hunting was finally banned in the 1960s by the International Whaling Commission, 350,000 individuals had been killed. The total world population is now 3–4,000 with the largest concentration of 2,000 individuals located off the coast of California. This group represents the best hope for a long-term recovery in Blue Whale population. The Blue Whale has been on the list of endangered species since the 1960s.
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