Blue whales, also known as the whale is a whale belongs Mysticeti division (baleen whales). [9] Length 30 meters (98 ft) [10] and weighs 180 tons (200 short ton) [ 11] or even more, it is the largest animal remains and heaviest ever existed. [12] The body long and slender blue whale, may have bluish-gray on the back and light than on the abdomen. [13] There are at least three blue whale subspecies: B. m. musculus live in waters north Atlantic and north Pacific, B. m. intermedia live in the Southern Ocean and B. m. brevicauda (pygmy blue whale) live in the Indian Ocean and the South Pacific. Like other whales, their food mostly plankton and small crustaceans. [14] Before the 20th century, blue whales exist with large number of individuals in most oceans world. But more than 100 years, we hunted to near extinction until protected by the international law in 1966. According to a report in 2002, there were approximately 5000-12000 individuals living around world, [15] including at least 5 groups. Before being hunted, the blue whale population the largest in Antarctica waters around 239,000 individuals (from 202,000 to 311,000). [16] The smaller population (approximately 2,000 individuals) are concentrated in the east coast north Pacific, Antarctica. There are two different populations in the North Atlantic and at least two more populations in the Southern Hemisphere. In 2014, the number of blue whales in California have recovered to near pre hunting period. [17] The largest blue whale scientists here Dola children weighing 177 tons. [15 ] In the first 7 months after birth, baby blue whale drinks approximately 400 liters (110 US gal) of milk each day, so the volume it increased rapidly to about 90 kilograms (200 lb) every 24 hours. Even at birth weighs 2,700 kilograms it (6,000 lb) weight -by a hippopotamus (hippopotamus) mature. [9] Blue whales have relatively small brains (6.92 kilograms (15.26 lb )), only about 0.007% of its body weight. The largest blue whale scientists here Dola children weighing 177 tons. [15] Blue whales feed almost every time, with a small amount of animal flippers. [25] The species of whales eat plankton, depending on the seas but it songMot adult blue whale can consume up to 40 million children each time a day. [26 ] We always foraging in areas with highest density of each time, occasionally consume 3,600 kilograms (7,900 lb) each time in just over a day. [25] The daily energy requirement of an adult blue whale is in the region of 1.5 million kilocalories. [40] Their Habits are seasonal feeding. Blue whales gorge on Krill in the rich waters of the Antarctic is before migrating to breeding grounds in the warmer chúng, less-rich waters Nearer the Equator. The blue whale can take up to 90 times as print much energy as it expends, either, allowing it to build up Reserves Considerable energy. [41] [42] [43] Because Krill move, blue whales feed Typically Depths of more coal at 100 meters (330 ft) khi the day and only surface-feed at night. Typically 10 minutes Dive times are khi feeding, though dives of up to 21 minutes are possible The. The whale feeds by lunging forward at groups of Krill, taking the animals and a large quantity of water Into its mouth. The water is then squeezed out through the Baleen plates by pressure from the ventral pouch and tongue. Once the mouth is clear of water, the còn Krill, pass through the plates thể, are swallowed. The blue whale am also incidentally Consumes small fish, crustaceans and squid caught up with Kril
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