antarctic
around 25，000 orcas are estimated around the antarctic， and four types have been documented two dwarf species， named orcinus nanus and orcinus glacialis， were described during the 1980s by soviet researchers， but most cetacean researchers are skeptical about their status， and linking these directly to the types described below is difficult
some examples of variations in orcas
type a or antarctic orcas look like a “typical“ orca， a large， black-and-white form with a medium-sized white eye patch， living in open water and feeding mostly on minke whales
type b1 or pack ice orcas are smaller than type a it has a large white eye patch most of the dark parts of its body are medium grey instead of black， although it has a dark gre