Tell about Blue Whale ?

The Blue Whale game or Blue Whale Challenge is believed to be a suicide game wherein a group of administrators or a certain curator gives a participant a task to complete daily — for a period of 50 days — the final of which is the participant committing suicide.

Incredibly, Blue Whales are graceful swimmers cruise the ocean at over 8km/h, and can reach speeds of over 30km/h.

The blue whale is the largest animal on the planet, weighing as much as 200 tons (approximately 33 elephants).

The blue whale is usually classified as one of eight species in the genus Balaenoptera; one authority places it in a separate monotypic genus, Sibbaldus. but this is not accepted elsewhere.

They mainly catch their food by diving, and descend to depths of approximately 500 m.The Blue Whale is the largest animal ever to have lived on earth.

The blue whale has a heart the size of a Volkswagen Beetle.

A single adult blue whale can consume 36,000 kg of krill a day.

Blue whales have few predators but are known to fall victim to attacks by sharks and killer whales, and many are injured or die each year from impacts with large ships.

Its stomach can hold one ton of krill and it needs to eat about four tons of krill each day.

The whale’s mouth has a fascinating row of plates fringed with bristles to help it filter its main source of food – plankton from the water. There is what looks like a moustache of long bristles on the end of each plate to help it hold the minute prey.

DNA sequencing analysis indicates that the blue whale is phylogenetically closer to the sei whale (Balaenoptera borealis) and Bryde's whale (Balaenoptera brydei) than to other Balaenoptera species, and closer to the humpback whale (Megaptera) and the gray whale (Eschrichtius) than to the minke whales (Balaenoptera acutorostrata and Balaenoptera bonaerensis).

They are the loudest animals on Earth and are even louder than a jet engine.

Although the blue whale is a deep-water hunter, as a mammal, it must come to the surface of the sea to breathe. When it surfaces, it exhales air out of a blowhole in a cloud of pressurized vapour that rises vertically above the water for up to 9m.

Their calls reach 188 decibels, while a jet reaches 140 decibels.

Blue whales are by far the biggest animals in the world. Even the biggest dinosaur that ever lived doesn't come close in size to the blue whale.

Incredibly, Blue Whales are graceful swimmers cruise the ocean at over 8km/h, and can reach speeds of over 30km/h.

Females breed only once every three years and gestation is between 11-12months. Females usually only have one young.

There have been at least 11 documented cases of blue whale-fin whale hybrid adults in the wild. Arnason and Gullberg describe the genetic distance between a blue and a fin as about the same as that between a human and a gorilla

The blue whale is a type of mammal called a cetacean and is a type of baleen whale.

They mainly catch their food by diving, and descend to depths of approximately 500 m.

A baby blue whale (calf) emerges weighing up to 2,7000kg and up to 8m long. New born whales are helped to the surface of the water by their mothers and are often encouraged (nudged) by other females so that they can take their first breath of air.

Blue whales can grow to over 33 metres (around 100ft) in length, which is over twice as long as a t-rex dinosaur – and makes them the largest animal species on Earth! The calf of a blue whale is around 7 metres in length, around the same as an adult African elephant.

Blue whales have few predators but are known to fall victim to attacks by sharks and killer whales, and many are injured or die each year from impacts with large ships.

he scientific name for the blue whale is the Balaenoptera muscolus. Blue whales live in every one of the oceans of the world.

Researchers working off Fiji believe they photographed a hybrid humpback-blue whale including the discovery through DNA analysis from a meat sample found in a Japanese market.