Southern Right Whales are about the size of a bus and weigh up to 80 tonnes. They use their tails to swim but when they lift them up out of the water, they may be trying to cool their body temperature.
Southern Right Whales are about the size of a bus and weigh up to 80 tonnes. They use their tails to swim but when they lift them up out of the water, they may be trying to cool their body temperature.