Rorqual

Rorquals ( /ˈrɔrkwəl/) (family Balaenopteridae) are the largest group of baleen whales, with nine species in two genera. They include the largest animal that has ever lived, the blue whale, which can reach 150 tonnes (170 short tons), and another that reaches 70 tonnes (77 short tons); even the smallest of the group, the northern minke whale, reaches 9 tonnes (9.9 short tons).