Doc White / Humpback Whale (Megaptera novaeangliae) calf. Tonga, South Pacific, September.

DOC WHITE / Blue whale underwater close-up of head and mouth feeding with pouch inflated, Mexico

Doug Perrine / Bryde's whale (Balaenoptera brydei / edeni) expelling air and water from mouth through baleen plates after engulfing part of a baitball of Sardines, Sardinops sagax, off Baja California, Mexico (Easte...

Wild Wonders of Europe / Aukan / Three Killer whales / Orcas (Orcinus orca) underwater, Kristiansund, Nordmre, Norway, February 2009. WWE INDOOR EXHIBITION

Sue Flood / Beluga whales trapped at ice hole {Delphinapterus leucas} too far away to reach open sea, Canadian High Arctic. June 1999

Franco Banfi / Beluga whale (Delphinapterus leucas) swimming under ice and exhaling air, with scuba diver in background, Arctic circle Dive Center, White Sea, Karelia, northern Russia, captive

Doug Perrine / Sperm whale (Physeter macrocephalus) juvenile female aged about 6-11 years, Endangered Species, Commonwealth of Dominica, Caribbean, March

Doc White / Humpback Whale (Megaptera novaeangliae) calf, Tonga, South Pacific, September.

Franco Banfi / Beluga whale (Delphinapterus leucas) swimming under ice and exhaling air, Arctic circle Dive Center, White Sea, Karelia, northern Russia. Captive

Doug Perrine / Bryde's whale (Balaenoptera brydei / edeni) swimming over a bait ball of Sardines, three ridges on forehead that distinguish the Bryde's whale from other mysticetes are prominently visible. Off Baja C...

Bertie Gregory / Killer whale (Orcinus orca) tail slapping at sunset, transient race, Vancouver Island, British Columbia, Canada, July.

Juergen Freund / Dwarf minke whale {Balaenoptera acutorostrata} portrait, Queensland, Australia