In their paper “Trans-Pacific Consumption of Cephalopods by North Pacific Killer Whales (Orcinus orca), “ Hanson and Walker points out that cephalopods, specifically squid, may be a larger part of the diet of many transient killer whales in the North Pacific Ocean that was once thought. They identified three particular ecotypes of whales observed in the North Pacific which include residents and offshores that both feed primarily on other smaller fish, and transients which feed on marine mammals.
The research involved acquiring four female killer whale specimens from four different locations. Two of these killers were West coast U.S. transients, one was an Eastern Tropical Pacific pelagic from Hawaii, and the last was a Western North Pacific
The research involved acquiring four female killer whale specimens from four different locations. Two of these killers were West coast U.S. transients, one was an Eastern Tropical Pacific pelagic from Hawaii, and the last was a Western North Pacific