How big can a animal get?

The blue whale (Balaenoptera musculus) is the largest animal that has ever lived. Adult blue whales can reach lengths of over 100 feet (30.5 meters) and weigh up to 200 tons (181 metric tons). Their tongues alone can weigh as much as an elephant.

Blue whales are found in all the world's oceans, but they are most common in the subpolar regions. They are deep divers and can reach depths of over 1,000 feet (305 meters). Blue whales feed on krill, small crustaceans that they filter from the water using their baleen plates.

Blue whales are social animals and live in pods of up to 100 individuals. They communicate with each other using low-frequency sounds that can travel for hundreds of miles. Blue whales are also known for their long migrations. They travel from their feeding grounds in the subpolar regions to their breeding grounds in the tropics and back again every year.

Blue whales are listed as endangered by the International Union for Conservation of Nature (IUCN). Their populations have been severely depleted by commercial whaling. However, thanks to conservation efforts, their numbers are slowly starting to recover.