world's largest mammal on earth
Southern Ocean,Antarctica. The largest animal on Earth based on weight is the blue whale (Balaenoptera musculus), which can weigh up to 160 tonnes (352,000 lb). Its average length is 24 m (80 ft), but it is not the longest animal on Earth. A huge specimen caught in the Southern Ocean, Antarctica, on 20 March 1947 weighed 190 tonnes (418,000 lb) and measured 27.6 m (90 ft 6 in). Newborn calves are 6-8m (20-26 ft) long and weigh up to 3 tonnes (6,613 lb).