Blue whales, also known as the whale is a whale belongs Mysticeti division (baleen whales) Length 30 meters and weighs 180 tons or even more It is the largest animal remains and heavy ever existed. The body is long and slender blue whale, may have bluish-gray on the back and lighter on the belly. At least 3 blue whale subspecies: B. m. musculus live in waters north Atlantic and north Pacific, B. m. intermedia live in the Southern Ocean and pygmy blue whale) live in the Indian Ocean and the South Pacific. Like other whales, their food mostly plankton and small crustaceans Before the 20th century, blue whales exist with large number of individuals in most of the world's oceans. 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. Before being hunted, the blue whale population the largest in Antarctica waters around 239,000 individual smaller populations (2,000 individuals) are concentrated in the South China Sea North Pacific, South Pole. In 2014, the number of blue whales in California have recovered to near pre hunting period. The largest blue whale scientists here Dola children weighing 177 tons. Over the first 7 months after birth, baby blue whale drinks approximately 400 liters of milk per day, so the volume it increased rapidly to about 90 kilograms per 24 hours. Even at birth weighs 2,700 kilograms -so it was a hippopotamus volume mature. Blue whales have relatively small brains 6.92kg, only about 0.007% of its body weight. Because Krill move, blue whales feed Typically Depths of more coal at 100 meters 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 For sheer size, strength and his speed, blue whales have virtually no natural enemies in order nhien.Ca blue whale may be injured , even death, due to collisions with ships or entangled in fishing nets. The blue whale is an endangered species in the IUCN Red List since this book was published
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