Wayne Wu Ying / Wild Wonders of China / Indo-Pacific humpback dolphin (Sousa chinensis) Tai O, western side of Lantau Island, Hong Kong, China

Doug Perrine / Humpback whale (Megaptera novaeangliae) breaching as calf splashes down after a breach; windmills in background produce renewable energy; Hawaii Humpback Whale National Marine Sanctuary, Maui, Hawaii.

Sergio Hanquet / Atlantic spotted dolphin (Stenella frontalis) juvenile porpoising, Tenerife, Canary Islands.

Sergio Hanquet / Atlantic spotted dolphin (Stenella frontalis) juvenile porpoising, with pod, Tenerife, Canary Islands.

Nick Hawkins / Head of a North Atlantic right whale (Eubalaena glacialis) emerges from the water, Gulf of Saint Lawrence, Canada. July.

Espen Bergersen / Killer whales / orcas (Orcinus orca) travelling at high speed heading for a bait ball. Kvanangen, Troms, Norway. November

Jordi Chias / Gentoo penguins (Pygoscelis papua) swimming together and porpoising in search of krill, Antarctic Peninsula, Antarctica.

David Pattyn / Humpback whale (Megaptera novaeangliae) breaching in front of a tourist boat, Puerto Lopez , Santa Elena Peninsula, Manabi Province, Ecuador, July

David Pattyn / Humpback whale (Megaptera novaeangliae) two breaching at the same time together, Puerto Lopez , Santa Elena Peninsula, Manabi Province, Ecuador, July, Puerto Lopez , Santa Elena Peninsula, Manabi Prov...

Tony Wu / Humpback whale (Megaptera novaeangliae australis) female breaching. Vava'u, Tonga. Pacific Ocean.

Tony Wu / North Pacific humpback whale (Megaptera novaeangliae kuzira) breaching, Icy Strait, Alaska, USA. July.

Chris Gomersall / Bottlenose dolphin (Tursiops truncatus) breaching. Moray Firth, Scotland.

Pedro Narra / Bottlenose dolphin (Tursiops truncatus) porpoising, Sado Estuary, Portugal. October

Pedro Narra / Bottlenose dolphin (Tursiops truncatus) porpoising, Sado Estuary, Portugal. July

Claudio Contreras / Grey whale (Eschrichtius robustus) breaching, San Ignacio Lagoon, El Vizcaino Biosphere Reserve, Baja California, Mexico, March

Richard Robinson / False killer whales (Pseudorca crassidens) breaching, Northern New Zealand Editorial use only.

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

Nick Hawkins / Minke whale (Baelanoptera acutorostrata) breaching, Bay of Fundy, New Brunswick, Canada, July.

Nick Hawkins / Harbour porpoise, (Phocoena phocoena) porpoising, Bay of Fundy, New Brunswick, Canada, August.

SCOTLAND: The Big Picture / Bottlenose dolphin (Tursiops truncatus) breaching, Moray Firth, Scotland, UK, July.

Tony Wu / Humpback whale (Megaptera novaeangliae) female breaching together with her male calf. The calf had a large wound on his left peduncle area, one that appeared to be the result of a large bite, Vava'u,...

Tony Wu / Humpback whale (Megaptera novaeangliae) male breaching in front of Hunga island in Vava'u, Tonga, South Pacific

Chris & Monique Fallows / Cape fur seal (Arctocephalus pusillus) porpoising, False Bay, Cape Town, South Africa, July.

Chris & Monique Fallows / Dusky dolphins (Lagenorhynchus obscurus) porpoising, Puerto Madryn, Peninsula Valdez, Argentina, December.

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

Chris & Monique Fallows / Long-beaked common dolphin (Delphinus capensis) breaching in front of large ship during sardine run, East London, South Africa, June.

Chris & Monique Fallows / Dusky dolphins (Lagenorhynchus obscurus) porpoising, Puerto Madryn, Peninsula Valdez, Argentina, December.

Chris & Monique Fallows / Dusky dolphins (Lagenorhynchus obscurus) porpoising, Puerto Madryn, Peninsula Valdez, Argentina, December.

Wim van den Heever / Bottlenose dolphin (Tursiops truncatus) porpoising at surface, Port St Johns, South Africa

Wim van den Heever / Bottlenose Dolphin (Tursiops truncates) mother and calf porpoising during annual Sardine run, Port St Johns, South Africa, June.

Wim van den Heever / South African fur seals (Arctocephalus pusillus pusillus) surfing out on wave.Walvisbay, Namibia.

Wim van den Heever / Bottlenosed dolphin (Tursiops truncatus) porpoising during annual sardine run, Port St Johns, South Africa. June.

Wim van den Heever / Large pod of Bottlenose dolphins (Tursiops truncatus) porpoising over waves during annual sardine run, Port St Johns, South Africa. Runner up in the Animals in their Environment Category of the Wildl...

Cheryl-Samantha Owen / Great white shark (Carcharodon carcharias) breaching, at decoy seal, Seal Island, False Bay, off the coast of Cape Town, South Africa. July.

Gabriel Rojo / Southern Right whale (Eubalaena australis) breaching, Peninsula Valdes, Chubut, Patagonia, Argentina.

Chris & Monique Fallows / Long-beaked common dolphin (Delphinus capensis) school porpoising, False Bay, South Africa

Chris & Monique Fallows / Long-beaked common dolphin (Delphinus capensis) porpoising in still water, False Bay, South Africa

Chris & Monique Fallows / Great white shark (Carchardon carcharias) breaching on seal decoy, False Bay, South Africa

Bertie Gregory / Humpback whale (Megaptera novaeangliae) adult breaching, Vancouver Island, British Columbia, Canada, July.

Brandon Cole / Common dolphin (Delphinus delphis) breaching, upside down in mid-air, Channel Islands National Marine Sanctuary, California, USA, August.

Brandon Cole / Common dolphin (Delphinus delphis) breaching, Channel Islands National Marine Sanctuary, California, USA, August.

Brandon Cole / Common dolphin (Delphinus delphis) breaching, Channel Islands National Marine Sanctuary, California, USA, August.

Brandon Cole / Large group of Common dolphins (Delphinus delphis) breaching, Channel Islands National Marine Sanctuary, California, USA, August.