White rhinos (Ceratotherium simum) drinking, Mkhuze game reserve, KwaZulu-Natal, South Africa, Africa

White rhino (Ceratotherium simum), Imfolozi game reserve, KwaZulu-Natal, South Africa, Africa

White rhino (Ceratotherium simum), Imfolozi game reserve, KwaZulu-Natal, South Africa, Africa

Head and shoulders portrait of an old Bangladeshi (Bengali) man with a white beard, and children beyond, looking at the camera, in the slums of Dhaka (Dacca), Bangladesh, Asia

Head and shoulders portrait of "Braveheart", Highlander man in leather costume with facial paint of blue and white, snarling at the camera, Edinburgh, Lothian, Scotland, United Kingdom, Europe

Brown and white French Normandy cow with herd of cattle in a meadow in rural Normandy, France

White-fronted tern Sterna Striata) in full flight over a beach near South Head on the Tasman Sea, North Island, New Zealand

A pair of Upland Geese on Sea Lion Island in the Falkland Islands, South Atlantic (The female goose has a ruddy heads, the male has a white head).

White-fronted terns (Sterna Striata) on a beach near South Head on the Tasman Sea, North Island, New Zealand

Close-up head shot portrait of bearded camel trader with cream turban, Pushkar Camel Fair, Pushkar, Rajasthan, India, Asia

White-fronted tern (Sterna Striata) calling on a rock near South Head on the Tasman Sea, North Island, New Zealand

Head shot portrait of wise looking senior sadhu (holy man) dressed in orange with a bushy white beard, Uttar Pradesh, India, Asia

White-fronted terns (Sterna Striata) on a beach near South Head on the Tasman Sea, North Island, New Zealand

White-fronted terns (Sterna Striata) on a beach near South Head on the Tasman Sea, North Island, New Zealand

White chalk cliffs of the Seven Sisters, seen from Seaford Head, Sussex, England, United Kingdom, Europe

White-fronted tern (Sterna Striata) calling on a rock near South Head on the Tasman Sea, North Island, New Zealand

Portrait of a peasant with pipe, typical white head band, carrying a wicker basket, in Sichuan, China, Asia

Brown and white French Normandy herd of cows in a meadow in rural Normandy, France

Herd of brown and white French Normandy cattle in a meadow in the Dordogne area of France

White clouds and blue skies over dales landscape near Ribble Head, North Yorkshire, England, United Kingdom, Europe

White-fronted terns (Sterna Striata) on a beach near South Head , North Island, New Zealand

Portrait of a girl in traditional headscarf, Qasr, Dakhla oasis, Western Desert, Egypt, North Africa, Africa

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

A Wandering Albatross; Diomedea exulans, the bird with the largest wing span on the planet, at around 11 feet 6 inches, nesting on Prion Island, South Georgia, Southern Ocean.

A Wandering Albatross; Diomedea exulans, the bird with the largest wing span on the planet, at around 11 feet 6 inches, nesting on Prion Island, South Georgia, Southern Ocean.

Flamborough Head Lighthouse, East Yorkshire, Yorkshire, England, United Kingdom, Europe

White rhinoceros (ceratotherium simum) eating grass, close-up of head showing horns, eastern cape, south africa

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

Bewick's Swan (Cygnus columbianus) close-up of head showing yellow and black beak, Slimbridge, UK

White rhinoceros (ceratotherium simum) eating grass, close-up of head showing horns, eastern cape, south africa

Mute swan (cygnus olor) resting head on its back, close-up view, abbotsbury, uk

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

White rhinoceros (ceratotherium simum) close-up of head, eating grass, eastern cape, south africa

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

Bald eagle, haliaeetus leucocephalus, weisskopfseeadler, homer, kenai peninsula, alaska, usa

Juvenile Beluga whale (Delphinapterus leucas), an endangered and protected species, lifts its head to take a look at the research vessel. Beluga calves are dark in colour and turn white at seven to nine years of age. St. Lawrence estuary, Canada

Goldenrod crab spider (Misumenia vatia) adult female, white form, camouflaged on Wild Angelica (Angelica sylvestris) flowers sinking fangs into the head of a large Horse fly (Dasyrhamphis anthracinus), Corsica, France. MORE INFO: Crab spider family Thomisidae, Horse fly family Tabanidae, plant family Apiaceae.

Greek tortoise (Testudo graeca ibera) head, Spain

Head chef Tommi of the Lindblad Expedition ship National Geographic Endeavour at play in Antarctica. No model release.

Chinstrap penguin (Pygoscelis antarctica) chick head detail at colony on Useful Island near the Antarctic Peninsula. There are an estimated 2 million breeding pairs of chinstrap penguins in the Antarctic peninsula region alone, perhaps as many as 7.5 million breeding pairs in all of Antarctica. Their name derives from the narrow black band under their heads which makes it appear as if they are wearing black helmets, making them one of the most easily identified types of penguin. Other names for them are "Ringed Penguins", "Bearded Penguins", and "Stonecracker Penguins" due to their harsh call. They grow to 68 cm (27 in). The average adult weight of a Chinstrap Penguin is 4.5 kg (10 lbs). Weight can range from 3 to 6 kg (6.6-13.2 lbs), with males being slightly larger and weight varying based on where the penguin is in the breeding cycle. Their diet consists of krill, shrimp, and fish. On land they build circular nests from stones, and lay two eggs, which are incubated by both the male and the female for shifts of five to ten days. They can also breed on icebergs, though they prefer non-icy conditions. The chicks hatch after about 35 days, and have fluffy gray backs and white fronts. The chicks stay in the nest for 20?30 days before they go to join a creche. At around 50?60 days old, they moult, gaining their adult plumage and go to sea. The Chinstrap Penguin was first described by German naturalist Forster in 1781. Its specific epithet was often seen as antarctica, however a 2002 review determined the genus Pygoscelis was masculine, and hence the correct binomial name is Pygoscelis antarcticus.

Minke whale (Balaenoptera acutorostrata) at the surface to breath with blow hole open. Characteristic white bands on the flipper visible thorugh the water. Hebrides, Scotland (1 of 2 images).

Minke whale (Balaenoptera acutorostrata) at the surface to breath with blow hole open. Characteristic white bands on the flipper visible thorugh the water. Hebrides, Scotlan

White-eyed moray eel, Siderea thyrsoidea. Often pokes its head out of holes and crevices on coral reefs in the Indo-Pacific region. Lembeh Strait, North Sulawesi, Indonesia, Pacific Ocean.

Adult American Bald Eagle (Haliaeetus leucocephalus) taking flight near Juneau in Southeast Alaska, USA. Pacific Ocean.

Snakes head fritillary (Fritillaria meleagris) flower, UK.

Snake's head fritillary (Fritillaria meleagris), UK

Minke whale (Balaenoptera acutorostrata) surfacing for air with characteristic white bands on its flippers visible through the water on each side . Hebrides, Scotland

Snake's head fritillary (Fritillaria meleagris), Oxfordshire, UK

Snake's head fritillary (Frillaria meleagris), UK

Slingjaw wrasse (Epibulus insidiator), Palau, Caroline Islands, Micronesia, Pacific Ocean, Pacific

Adult brown pelican (Pelecanus occidentalis) in the lower Gulf of California (Sea of Cortez), Mexico. Note the yellowish head, red gular pouch, and white neck of the adult.

Adult brown pelican (Pelecanus occidentalis) in the lower Gulf of California (Sea of Cortez), Mexico. Note the yellowish head, red gular pouch, and white neck of the adult.

Adult American Bald Eagle (Haliaeetus leucocephalus) taking flight near Juneau in Southeast Alaska, USA. Pacific Ocean.

California gray whale (Eschrichtius robustus) calf surfacing in the calm waters of Magdalena Bay, Baja California Sur, Mexico.

Adult bald eagle pair (Haliaeetus leucocephalus) on a channel marker just outside Petersburg, Southeast Alaska, USA.

California gray whale (Eschrichtius robustus) calf surfacing in the calm waters of Magdalena Bay, Baja California Sur, Mexico.

Snake's head fritillary (Frillaria meleagris), UK

California gray whale (Eschrichtius robustus) calf surfacing in the calm waters of Magdalena Bay, Baja California Sur, Mexico

Adult brown pelican (Pelecanus occidentalis) in the lower Gulf of California (Sea of Cortez), Mexico. Note the yellowish head, red gular pouch, and white neck of the adult.

California gray whale (Eschrichtius robustus) calf surfacing (note eye and mouthline) in the calm waters of Magdalena Bay, Baja California Sur, Mexico.

California gray whale (Eschrichtius robustus) calf surfacing (note eye and mouthline) in the calm waters of Magdalena Bay, Baja California Sur, Mexico.

Minke whale (Balaenoptera acutorostrata) spy hopping with white fins and rostrum visible. Husavik, Iceland

Adult fin whale (Balaenoptera physalus) sub-surface feeding (head detail - note the white lower jaw) in the rich waters off the continental shelf, Bear Island, Barents Sea, Norway

Juvenile bald eagle (Haliaeetus leucocephalus) in Takatz Bay on Baranof Island, Southeast Alaska, USA

California Gray Whale (Eschrichtius robustus) spy-hopping near the town of Puerto Lopez Mateos, BCS along the Pacific side of the Baja Penninsula. Pacific Ocean.

Pacific Pennantfish (Heniochus diphreutes), diagonal view of head, almost monochrome, but with yellow flash, Tahiti, French Polynesia

An adult American Bald Eagle (Haliaeetus leucocephalus) perched on a rock in Chatham strait, Southeast Alaska, USA. Pacific Ocean.

American Bald Eagle (Haliaeetus leucocephalus) resting on a calved iceberg from the Le Conte glacier just outside Petersburg in Southeast Alaska, USA. Pacific Ocean.

An adult American Bald Eagle (Haliaeetus leucocephalus) in flight over Chatham strait, Southeast Alaska, USA. Pacific Ocean.

Adult bald eagle (Haliaeetus leucocephalus) in Takatz Bay on Baranof Island, Southeast Alaska, USA

Juvenile bald eagle (Haliaeetus leucocephalus) in Takatz Bay on Baranof Island, Southeast Alaska, USA

Juvenile bald eagle (Haliaeetus leucocephalus) in Takatz Bay on Baranof Island, Southeast Alaska, USA

Adult bald eagle (Haliaeetus leucocephalus) in Takatz Bay on Baranof Island, Southeast Alaska, USA

Caucasian teenage girl wearing bowl on head near flowering tree

Hispanic couple about to kiss

Hispanic barber shaving man's face

Young girls doing arts and crafts

Portrait of serious Caucasian woman leaning on sheet

Hispanic barber shaving man's face

White Rhino walking in savanna

Beluga whale in seen through window, Delphinapterus leucas, USA, California, San Diego, SeaWorld

Child looking at Beluga whale, Delphinapterus leucas, USA, California, San Diego, SeaWorld

Lavender Creme Brulee with raspberries, Restaurant Taverne Zum Schaefli, Owner and head chef Wolfgang Kuchler, Wigoltingen, Lake Constance, Switzerland

Woman having an Ayurveda head massage, Wellness Hotel, Spa Area, Spa Hotel Seehotel Neuklostersee, Mecklenburg - Western Pomerania, Germany

Lavender Creme Brulee with raspberries, Restaurant Taverne Zum Schaefli, Owner and head chef Wolfgang Kuchler, Wigoltingen, Lake Constance, Switzerland

Head sail of a sailing ship, Traditional Sailing Ship, Bora Bora, South Pacific, PR

Smokey Cape Lighthouse, Hat Head National Park, near Arakoon, New South Wales, Australia

Snowy owl (Bubo scandiacus, Bubo scandiaca, Nyctea scandiaca), male, portrait, native to northern Europe, Siberia, Greenland and North America, captive, North Rhine-Westphalia, Germany, Europe

Young woman from the Hamar tribe during the bull-leaping ceremony, an initiation rite, portrait, southern Omo Valley, Ethiopia, Africa

Traditionally painted boy from the Arbore tribe, Omo valley, Ethiopia, Africa

Portrait of Samba dancer, Notting Hill Carnival, London, England, United Kingdom, Europe

Man wearing a white turban with a chilam pipe, portrait, Jaipur, Rajasthan, India, Asia

Snowy Owl (Nyctea scandiaca), Foto-Siegel photo exhibition, Erfurt, Thuringia, Germany, Europe

Christ the King, the world's largest statue of Jesus Christ at Swiebodzin, Lubusz Land, Lubusz Voivodeship or Lubuskie Province, Poland, Europe

Women singing, church choir, wedding, Bamenda, Cameroon, Africa