Espen Bergersen / Killer whales / orcas (Orcinus orca). Spyhopping. Kvaloya, Troms, Norway October

Espen Bergersen / Killer whales / orcas (Orcinus orca). Spyhopping. Kvaloya, Troms, Norway October

Espen Bergersen / Aerial shot of a fishing boat catching Atlantic herring (Clupea harenguis), with Killer whales (Orcinus orca) and Humpback whales (Megaptera novaeangliae) swimming around the boat and large numbers of...

Espen Bergersen / Aerial shot of a fishing boat catching Atlantic herring (Clupea harenguis), with Killer whales (Orcinus orca) and Humpback whales (Megaptera novaeangliae) swimming around the boats and large numbers o...

Espen Bergersen / Aerial shot of fishing boats catching Atlantic herring (Clupea harenguis), with Killer whales (Orcinus orca) swimming around the boats, Troms, Norway, January.

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 into a huge shoal of Atlantic herring (Clupea harenguis), hunting, Sommaroy, Troms, Norway, January.

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

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 two Killer whales (Orcinus orca) swimming inside a large shoal of Atlantic herring (Clupea harenguis), hunting, Sommaroy, Troms, Norway, January.

Espen Bergersen / Aerial shot of a huge shoal of Atlantic herring (Clupea harenguis), with a Humpback whale (Megaptera novaeangliae) nearby, Sommaroy, Troms. Norway, January.

Espen Bergersen / Aerial shot of a Killer whale (Orcinus orca) spyhopping several times close to land, with people watching and taking pictures, Sommaroy, Troms. Norway, January.

Espen Bergersen / Aerial shot of three Killer whales (Orcinus orca) swimming close to the surface, Troms, Norway, August.

Espen Bergersen / Aerial shot of Killer whales (Orcinus orca) near the surface, showing mating behaviour including a male Killer whale displaying penis, Troms, Norway, August.

Espen Bergersen / Aerial shot of Killer whales (Orcinus orca) near the surface, showing mating behaviour, Troms, Norway, August.

Espen Bergersen / Aerial shot of a fishing boat with net full of Atlantic herring (Clupea harengus), with Killer whales (Orcinus orca) swimming around the outside, Skjervoy, Troms, Norway, November.

Espen Bergersen / Aerial shot of Killer whale (Orcinus orca) hunting Atlantic herring (Clupea harengus), Troms, Norway, October.

Espen Bergersen / Aerial shot of a pod of Killer whales (Orcinus orca) swimming near the surface, Troms, Norway, October.

Espen Bergersen / Aerial shot of five Humpback whales (Megaptera novaeangliae) lunge feeding in a shoal of Atlantic herring (Clupea harengus) with some fish jumping out of the water, Troms, Norway, January.

Espen Bergersen / Aerial shot of a group of Humpback whales (Megaptera novaeangliae) lunge feeding in a shoal of Atlantic herring (Clupea harengus) with some fish jumping out of the water, one whale creating a bubble n...

Espen Bergersen / Aerial shot of five Humpback whales (Megaptera novaeangliae) lunge feeding in a shoal of Atlantic herring (Clupea harengus) with some fish jumping out of the water, Troms, Norway, January.

Espen Bergersen / Aerial shot of Humpback whales (Megaptera novaeangliae) lunge feeding in a shoal of Atlantic herring (Clupea harengus), Troms, Norway, January.

Espen Bergersen / Aerial shot of four Humpback whales (Megaptera novaeangliae) lunge feeding in a shoal of Atlantic herring (Clupea harengus) with some fish jumping out of the water, Troms, Norway, January.

Espen Bergersen / Aerial shot of four Humpback whales (Megaptera novaeangliae) lunge feeding in a shoal of Atlantic herring (Clupea harengus) with some fish jumping out of the water, Troms, Norway, January.

Espen Bergersen / Aerial shot of three Humpback whales (Megaptera novaeangliae) swimming into a shoal of Atlantic herring (Clupea harengus), preparing to lunge feed, Troms, Norway, January.

Espen Bergersen / Aerial shot of four Humpback whales (Megaptera novaeangliae) lunge feeding in a shoal of Atlantic herring (Clupea harengus) with some fish jumping out of the water, Troms, Norway, January.

Espen Bergersen / Aerial shot of four Humpback whales (Megaptera novaeangliae) swimming near to a shoal of Atlantic herring (Clupea harengus), Troms, Norway, January.

Espen Bergersen / Aerial shot of four Humpback whales (Megaptera novaeangliae) lunge feeding in a shoal of Atlantic herring (Clupea harengus) with some fish jumping out of the water, Troms, Norway, January.

Espen Bergersen / Aerial shot of a Humpback whale (Megaptera novaeangliae) swimming showing belly, Troms, Norway, January.

Espen Bergersen / Aerial shot of a Humpback whale (Megaptera novaeangliae) showing belly and blowing, Troms, Norway, January.

Espen Bergersen / Aerial shot of a Humpback whale (Megaptera novaeangliae) diving and showing tail fluke, Troms, Norway, January.

Espen Bergersen / Aerial shot of a large group of Humpback whales (Megaptera novaeangliae), Troms, Norway, January.

Espen Bergersen / Aerial shot of a large group of Humpback whales (Megaptera novaeangliae), Troms, Norway, January.

Espen Bergersen / Aerial shot of two Humpback whales (Megaptera novaeangliae) coming to the surface to breathe, 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.

Espen Bergersen / Aerial shot of Killer whale (Orcinus orca) carousel feeding close to Tromvik harbour, Troms, Norway, December.

Espen Bergersen / Aerial shot of Killer whale (Orcinus orca) hunting Atlantic herring (Clupea harengus) using carousel feeding, with herring jumping out of the water and gulls (Larus) circling above, Tromvik, Troms, No...

Espen Bergersen / Aerial shot of a female Humpback whale (Megaptera novaeangliae) and calf surrounded by Killer whales (Orcinus orca), mother hits sideways with her tail fluke to drive Killer whales away, Skjervoy, Tro...

Espen Bergersen / Aerial shot of two Killer whales (Orcinus orca) spyhopping, with a snowy landscape in the background, Skjervoy, Troms, Norway, December.

Espen Bergersen / Aerial shot of a small pod of Killer whales (Orcinus orca) at surface, with snowy landscape in the background, Skjervoy, Troms, Norway, December.

Espen Bergersen / Aerial shot of a pod of Killer whales (Orcinus orca) carousel feeding, Skjervoy, Troms, Norway, November.

Espen Bergersen / Aerial shot of a pod of Killer whales (Orcinus orca) carousel feeding, Skjervoy, Troms, Norway, November.

Espen Bergersen / Aerial shot of a pod of Killer whales (Orcinus orca) carousel feeding, drone moving closer, Skjervoy, Troms, Norway, November.

Espen Bergersen / Time lapse of people emptying plastic bags full of marine litter to show what has been collected during a beach clean, Tussoya, Troms, Norway, 2017.

Espen Bergersen / Humpback whales (Megaptera novaeangliae) bubble net / lunge feeding on herring (Clupea harengus) at dusk, pod co-operative feeding, Kvaloya, Troms, Norway, November

Espen Bergersen / Killer whale / Orca (Orcinus orca) male surfacing at sunset, Kvaloya, Troms, Norway October

Espen Bergersen / Humpback whale (Megaptera novaeangliae) breaching above surface, Kvaloya, Troms, Norway November

Espen Bergersen / Sperm whale (Physeter macrocephalus) tail fluke visible as whale dives. outside Andoya, Norway March