Male Resident Killer Whale

Male killer whale

Male because of the large dorsal fin as the species shows considerable size difference between males and females. Adult males develop larger pectoral flippers, dorsal fins, tail flukes, and girths than females. Resident because the dorsal fin is rounded at the tip and curved and tapering while the transient is shorter and sharper. The other key reason that this is a resident is that it is coming close to the boat while transients are less curious and will not approach a boat.