The largest baby in the world is the young blue whale. At birth,......... weighs about sixteen thousand pounds and sometimes is twenty-five feet in length, often being almost half as long as its mother. Its tremendous size is possible only because the water in which the whale lives help to support its heavy weight; it could never support the weight of its huge body on land. Although the young blue whale is the largest baby in the......, it feeds on very small animals, eating only plankton, small fishes, and tiny shrimp-like animals called krill.