What is the largest species of whale?

The largest species of whale is the blue whale (Balaenoptera musculus), which can grow to lengths of up to 30 meters (98 feet) and weigh as much as 180 metric tons. Despite their enormous size, blue whales primarily feed on tiny organisms such as krill, using their baleen plates to filter large quantities of water. Blue whales are found in oceans around the world and undertake long migrations between feeding and breeding grounds. They are considered endangered due to past whaling practices.