What is the largest vertebrate animal?

The largest vertebrate animal is the blue whale (Balaenoptera musculus). Blue whales can reach lengths of up to 100 feet (30 meters) and weigh up to 200 tons (180 metric tons). They are found in all oceans except the Arctic Ocean. Blue whales are filter feeders and primarily feed on krill, small crustaceans that they filter out of the water with their baleen plates. Blue whales are social animals and often travel in pods of up to 100 individuals. They are also very vocal animals and produce a variety of sounds, including low-frequency moans, whistles, and pulsed calls.