Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding, Southeast Alaska, United States of America, North America

Adult gentoo penguins (Pygoscelis papua), squabble at Booth Island, Antarctica, Southern Ocean, Polar Regions

An Atlantic Puffin (Fratercula arctica), in Borgarfjaroarhofn, Iceland, Polar Regions

Caspian Tern (Hydroprogne caspia) at breeding colony on Ile des Oiseaux in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

Adult brown skuas (Catharacta antarctica) feeding on a penguin carcass near the Antarctic peninsula, Antactica, Polar Regions

Antarctic tern (Sterna vittata) in brash ice near the Antarctic Peninsula, Antarctica, Southern Ocean, Polar Regions

Adult Svalbard reindeer (Rangifer tarandus platyrhynchus) grazing on tundra in the Svalbard Archipelago, Norway, Arctic, Europe

Hamerkop (Scopus umbretta) carrying nesting material, Zimanga Game Reserve, South Africa, Africa

Sheep in tidal marsh at Mont-Saint-Michel bay with Abbey in the background, UNESCO World Heritage Site, Manche department, Normandy region, France, Europe

red squirrel: sciurus vulgaris in snow meikleour, perthshi re, scot. dorset

Small striped Christmas candy cane sweets forming heart on pink background

Viktualienmarkt, Munich, Bavaria, Germany

Sow brown bear (Ursus arctos) feeds on sedges as her yearling cub looks on near McNeil River, Alaska. Brown bears gather in the area each spring and early summer to feed heavily on nutritious sedges prior to the arrival of local salmon runs, Alaska, United States of America

Portrait of a black bear (Ursus americanus) pausing on a mountainside from feeding on lowbush cranberries and looking at the camera on a mid-October afternoon in Southcentral Alaska's Chugach Mountains, Alaska, United States of America

Dall Sheep rams (Ovis dalli) grazing on grass in the high country in Denali National Park and Preserve in Interior Alaska in autumn. Rams often travel in groups during this pre-rut time of year, Alaska, United States of America

Dall sheep ewe and nursing lamb (Ovis dalli) in the Chugach Mountains South of Anchorage in South-central Alaska in autumn; Alaska, United States of America

A hummingbird hovering beside a snow-covered feeder; Washington, United States of America