What is the Largest Animal Ever Existed on Earth?
The largest animal ever to have lived on Earth is the Antarctic blue whale. These massive creatures can grow up to 100 feet long and weigh over 200 tons. Despite their size, they feed exclusively on tiny shrimp-like animals called krill, consuming up to 8,000 pounds of krill in a single day. Unfortunately, blue whale populations have been depleted by hunting, and pollution and they are now considered a critically endangered species.