Antarctic minke whale and dwarf minke whale. The average group size in the Antarctic was about 2.4 (adjusted downwards for observer bias), with about a quarter of the sightings consisting of singles and one-fifth of pairs; the largest aggregation consisted of 60 individuals. Off South Africa, the average group size was about two, with singles (nearly 46%) and pairs (31%) being the most common – the largest was 15. Off Brazil, most sightings were of singles (32.6%) or pairs (31.5%), with the largest group consisting of 17 individuals. Like common minke whales, Antarctic minkes exhibit a great deal of spatial and temporal segregation
Antarctic minke whale dark gray dorsally and clean white (occasionally light gray to gray) ventrally with a thin, dusky margin. Some small, dark gray "speckling" may be present on the body. Antarctic minkes lack the bright white, transverse "flipper band" of the common minke and the white "shoulder blaze" and bright white "flipper patch" (occupying the proximal two-thirds of the flipper) of the dwarf minke. Instead, their narrow, pointed flippers, about one-sixth to one-eighth of the total body length, are normally either a plain light gray with an almost white leading edge and a darker gray trailing edge or two-toned, with a thin