Pygmy right whale (Caperea marginata)
Where found: Southern Ocean
Description: The Pygmy right whale is rarely seen and little studied. Only about 25 "at sea" sightings have been recorded. It is not a right whale (misnamed) and was thought extinct until 2012. The smallest of the baleen whales, ranging between 6 metres (20 ft) and 6.5 metres (21 ft) in length and 3,000 and 3,500 kg in mass. Despite its name, the pygmy right whale may have more in common with the gray whale and rorquals than the bowhead and right whales.