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

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

Tony Wu / Pygmy blue whale (Balaenoptera musculus brevicauda) diving with pelagic fish (likely yellowfin tuna or similar open ocean predatory species) visible in the background, Sri Lanka, Indian Ocean.

Frederique Olivier / Killer whale (Orcinus orca) hunting at the surface, with a Humpback whale (Megaptera novaeangliae) nearby, South Shetland Islands.

Frederique Olivier / Humpback whale (Megaptera novaeangliae) tail slapping at the surface, Peru.

Frederique Olivier / Southern minke whale (Balaenoptera bonaerensis) breaching, Antarctic.

Espen Bergersen / Atlantic herring (Clupea harengus) jumping out of the sea ahead of Humpback whale (Megaptera novaeangliae) bubble net feeding on them, kayakers in background. Kvaloya, Troms, Norway, November

Espen Bergersen / Humpback whales (Megaptera novaeangliae) aerial view of pod travelling along the coast of Kvaloya, Norway January

Espen Bergersen / Humpback whale (Megaptera novaeangliae) photograped from above, showing pectoral fin length, Kvaloya, Troms, Norway January

Mark Carwardine / Blue Whale (Balaenoptera musculus) Aerial - with whale watching boat - Endangered Species Skjalfandi Bay, northern Iceland