The blue whole is the largest mammal ever to have lived on earth. Blue whales were plentiful in approximately all the oceans on Earth until the origin of the twentieth century.
SIZES
The blue whale is the longest animal known to have eternally lived. Blue whales are tough to balance because of their size.
Length: Males average 82 ft, Females, 85 ft.
Weight: 175,000-285,000 lb.
LIFESTYLE
At birth, a blue whale calf is the biggest baby on earth: around 8m long and weighing about 4 tonnes. They reach sexual capability at 5-10 years. Call: Low-frequency moan. Produces ultrasonic chirps and whistles when feeding.
Habit: Social and migratory.
FEEDING SYSTEM
Alternatively, of teeth, the blue whale has a row of plates in its mouth, identified as baleen, which performs as a food-collecting device. The mouth and baleen work like a filter, holding;' up to 5 tons of water and plankton with each mouthful.
The blue whale has around 320 baleen plates, covering 40 inches long by 22 inches wide. Long points on the end of each plate hold the little prey. Having forced the water out of its mouth, the whale licks the plankton off with its beefy tongue.
Habitat
Similar other marine mammals, blue whales are dropped from early land animals. Millions of years gone, the richness of life in the sea lured them to water, and water life regularly changed their physical characteristics. Today, they consume most of their time in the Arctic and Antarctic Oceans, wherever plankton is plentiful. In wintertime, the whales migrate to the hot waters of the tropics. But fish in the tropics is scarce, so the whales depend on their thick layer of fat for nourishment.
BREEDING
Blue whales make close ties with one another and are seen in groups of two or four. Mating takes place in the melting waters of the tropics, where the young are born. The mom gives birth to a particular calf with the help of other females, who support her deliver the calf and then nudge the newborn to the outside for its first breath of air. At birth, the calf measures about 23 feet and weighs 7257.47792 kg. The baby is nurtured in the water, drinking more than 160 gallons of milk a day. At seven months, it can catch its food.
FOOD & HUNTING
In the Antarctic, blue whales feed on vast quantities of plankton called krill. In Arctic waters, they feed on only three species of shrimp (shelled) plankton. Freezing rain includes more oxygen and carbon dioxide than hot water, which gives it rich in marine life. Plankton is up to twenty times more plentiful in the Arctic and Antarctic than it is in the warm waters of the tropics. In contempt of its bulk, the blue whale can reach speeds of 10-1 5 knots. But it catches
greatest of its food by diving. It can dive to depths of 1650 feet and lie immersed for up to 2 hours. Rising of the depths, the whale feeds by accumulating a large amount of seawater in its mouth and then straining out the plankton. The species concerning this zooplankton consumed by blue whales diversifies from ocean to ocean.
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