Caperea marginata

The maximum body length of females is 6.45m, and that of males is 6.09m. It is the smallest of all baleen whales. The back is slightly protruding. The upper jaw is arched and pointed at the front, and the lower jaw is curved and slightly protruding in front of the upper jaw. The mouth extends backward to below the eye. The flippers are narrow and slightly rounded at the end. The dorsal fin is small, triangular, and sickle-shaped at the rear edge, located less than 1/3 of the back of the body. The caudal fin is wide, with a notch in the middle of the rear edge. When viewed from above, the head suddenly narrows in front of the eye, and the snout gradually tapers. The blowhole is V-shaped. There are no folds. The back of the body is black or gray, the sides of the body are light gray, and the belly is white. The baleen is light yellow with brown edging on the outer edge. The eyes are black. The baleen plates are slender, with 230 on each side. There is a pair of longitudinal shallow groov

It is only distributed between 310 and 520 degrees south latitude in the southern hemisphere, and is mostly found in waters with water temperatures of 5-200°C in southern New Zealand, southeast and southwest Australia, Tasmania, southern Africa, Argentina, Chile, the Falkland Islands, etc., and can reach the subtropical waters of the South Atlantic to the north.