Alex Mustard / Pod of False killer whales (Pseudorca crassidens) swimming beneath the surface of the ocean. Indian Ocean, off Sri Lanka.

David Fleetham / False killer whale (Pseudorca crassidens) just below surface exhaling as it breaks the surface. Maui, Hawaii.

Richard Robinson / False killer whales (Pseudorca crassidens) traveling with a pod of pelagic Bottlenose dolphins (Tursiops truncatus) Northern New Zealand

Richard Robinson / False killer whales (Pseudorca crassidens) travelling with a pod of pelagic Bottlenose dolphins (Tursiops truncatus) Northern New Zealand Editorial use only.

Doug Perrine / False killer whale (Pseudorca crassidens) pod, off the Kona Coast of Hawaii Island, Hawaiian Islands, USA. January.

Chris & Monique Fallows / Orca (Orcinus orca) breaching whilst hunting Common dolphin, False Bay, South Africa, April.

Chris & Monique Fallows / Orca (Orcinus orca) porpoising, False Bay, South Africa.

Chris & Monique Fallows / Orca (Orcinus orca) pod hunting common dolphin (Delphinus delphis) False Bay, South Africa.

Chris & Monique Fallows / Orca (Orcinus orca) near at surface whilst hunting dolphin, False Bay, South Africa.

Doug Perrine / False killer whale ( Pseudorca crassidens ) with mouth open, showing large conical teeth, captive, aquarium, from Indo-pacific, digitally manipulated

Todd Pusser / False killer whale {Pseudorca crassidens} Gulf of Mexico, Atlantic Ocean

Todd Pusser / False killer whale {Pseudorca crassidens} Gulf of Mexico, Atlantic Ocean