Espen Bergersen / Killer whale / orca (Orcinus orca) splashing with tail fluke. Kvaloya, Troms, Norway October Sequence 4 of 7

Espen Bergersen / Aerial shot of two Killer whales (Orcinus orca) swimming inside a shoal of Atlantic herring (Clupea harenguis), hunting, with one Killer whale tail slapping to stun the Herring, Sommaroy, Troms, Norwa...

Espen Bergersen / Aerial shot of two Killer whales (Orcinus orca) swimming inside a shoal of Atlantic herring (Clupea harenguis), hunting, Sommaroy, Troms, Norway, January.

Espen Bergersen / Aerial shot of a group of Killer whales (Orcinus orca) tail slapping, shot pans to the right, Skjervoy, Troms, Norway, November.

Flip Nicklin / Humpback Whale (Megaptera novaeangliae) tail slapping at sunrise, Lahaina, Maui, Hawaii

Chase Dekker / Orca (Orcinus orca) male tail slapping, Monterey Bay, California

Tony Wu / Humpback whale (Megaptera novaeangliae) executing a dramatic tail slap, throwing up a cascade of water with its powerful fluke, Vava'u, Tonga, South Pacific

Tony Wu / Humpback whales (Megaptera novaeangliae) unusual scene with two adults tail-slapping together in rough seas, Vava'u, Tonga, South Pacific

Floris van Breugel / Black and white photograph of humpback whale (Megaptera novaeangliae) tail slapping at surface, Glacier Bay National Park, Alaska, USA, August 2014.

David Pattyn / Humpback Whale (Megaptera novaeangliae) tail slapping, tail lob, lobtailing. Vancouver Island, British Columbia, Canada, July.

John MacPherson / 2020VISION / Bottlenose dolphins (Tursiops truncatus) adult and juvenile surfacing, tail slapping, Moray Firth, Inverness-shire, Scotland, UK, August

Michael Quinton / American Beaver (Castor canadensis) slapping water with tail in boreal pond, Alaska