resident (fish-eating) orcas: the curved dorsal fins are typical of resident females
resident: these are the most monly sighted of the three populations in the coastal waters of the northeast pacific residents" diets consist primarily of fish and sometimes squid， and they live in plex and cohesive family groups called pods female residents characteristically have rounded dorsal fin tips that terminate in a sharp corner they visit the same areas consistently british columbia and washington resident populations are amongst the most intensively studied marine mammals anywhere in the world resident orcas can be divided into at least three distinct munities; northern， southern and southern alaskan southern alaskan resident orcas are distributed from southeastern alaska to the kodiak archipelag