Male Killer whale (Orcinus orca) surfacing west of Snaefellsness Peninsular, Iceland

Mother and calf Killer whales (Orcinus orca) surfacing together west of Snaefellsness Peninsular, Iceland

Killer whale (Orcinus orca) surfacing west of Snaefellsness Peninsular, Iceland

Male Killer whale (Orcinus orca) surfacing, with eye clear of the water, west of Snaefellsness Peninsular, Iceland

Male Killer whale (Orcinus orca) with dorsal fin flopped to one side. Snaefellsness Peninsular, Iceland

Young male Killer whale (Orcinus orca) surfacing west of Snaefellsness Peninsular, Iceland

Two young male Killer whales (Orcinus orca) foraging for fish near the rocks tip of Snaefellsness Peninsular, Iceland.

Killer whale (Orcinus orca): this is a male but the dorsal fin has flopped over. This is probably genetic and not thought to be a big problem. Olafsvik, Iceland.

Killer whale (Orcinus orca), adult male, passing down Johnston Straight. Vancouver Island, Canada.

A group of 6 to 8 Orca (Orcinus orca) which attacked and killed a white-beaked dolphin at 74 11. 31 N and 16 03. 48 E off the continental shelf southwest of Bear Island in the Barents Sea, Norway.

A group of 6 to 8 Orca (Orcinus orca) which attacked and killed a white-beaked dolphin at 74 11. 31 N and 16 03. 48 E off the continental shelf southwest of Bear Island in the Barents Sea, Norway. Seen here are two adult females.

Killer whale (Orcinus orca) surfacing near a shoal of herring also being attacked by numerous gulls. Tysfjord, northern Norway

Transient Killer whale (Orcinus Orca) Male surfacing. National marine sanctuary, Monterey bay, California Pacific ocean, USA.

Killer Whales, Orcinus orca, young whale surfaces and blows ahead of two elders Monterey, California, USA

Spy-hopping Killer whale (Orcinus orca). Fjordland, northern Norway.

A group of 6 to 8 Orca (Orcinus orca) which attacked and killed a white-beaked dolphin at 74? 11. 31? N and 16? 03. 48? E off the continental shelf southwest of Bear Island in the Barents Sea, Norway.

A group of 6 to 8 Orca (Orcinus orca) which attacked and killed a white-beaked dolphin at 74 11. 31 N and 16 03. 48 E off the continental shelf southwest of Bear Island in the Barents Sea, Norway.

A group of 6 to 8 Orca (Orcinus orca) which attacked and killed a white-beaked dolphin at 74 11. 31 N and 16 03. 48 E off the continental shelf southwest of Bear Island in the Barents Sea, Norway. Seen here is the adult bull of the group.

Adult male Killer whale (Orcinus orca) surfacing with snowy mountains behind. Winter in northern Norway.

Adult Bull Orca (Orcinus orca) surfacing in Southeast Alaska, USA. Pacific Ocean.

Orca (Orcinus orca) Adult bull surfacing Tracy Arm, southeast Alaska, USA.

Two male Killer whales (Orcinus orca) at surface Tysfjord, Norway