The pygmy right whale (Caperea marginata) is a member of the cetotheres, a family of baleen whales, which until 2012 were thought to be extinct; previously C. marginata was considered the sole member of the family Neobalaenidae. First described by John Edward Gray in 1846, it is the smallest of the baleen whales, ranging between 6 and 6.5 metres (20 and 21 ft) in length and 3,000 and 3,500 kilograms (6,610 and 7,720 lb) in mass. Despite its...