Question

Which is the biggest animal in the world

Answer 1

blue whale

The blue whale (Balaenoptera musculus) is a marine mammal belonging to the suborder of baleen whales. At 30 metres (98 ft) in length and 180 metric tons (200 short tons) or more in weight, it is the largest known animal to have ever existed.

i am skeptical whether the last image is a blue whale or not. If not a blue whale would be much more larger!)

Its the Blue whale, A cetacean mammal larger than any dinosaur or sea animal ever existed!.

It weight around 150 tons to a maximum of 190 tons! And 30 meters long!

And more surprisingly it fed on krills which is only the size of our fingers!. Large shoals of krills are swallowed and water filtered through baleens instead of teeth.
The Blue Whale (Balaenoptera Musculus) is a marine mammal belonging to the sub-order of Baleen Whales. At 30 metres (98 feet) in length and 180 metric tons or more in weight, the Blue Whale is the largest or biggest animal in the today's world.

Answer 2

hope so its BLUE WHALE