第(10/17)页d and nicked dorsal fins resembling those of mammal-hunting transients， it may be that they also eat mammals and sharks they have mostly been encountered off the west coast of vancouver island and near haida gwaii offshores typically congregate in groups of 20–75， with occasional sightings of larger groups of up to 200 little is known about their habits， but they are geically distinct from residents and transients offshores appear to be smaller than the others， and females are characterized by dorsal fin tips that are continuously rounded
separate fish-eating and mammal-eating orca munities also exist off the coast of the russian far east and hokkaido， japan russian orcas are monly seen around the kamchatka peninsula and mander islands over 2，000 individual resident-like orcas and 130 transient-like orcas have been identified off russia at least 195 individual orcas have been catal
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