Difference between revisions of "Template:Westarctica.wiki:Today's featured article"

 
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The '''[[king penguin]]''' (''Aptenodytes patagonicus'') is a large species of [[penguin]], second only to the [[emperor penguin]] in size. There are two subspecies: ''A. p. patagonicus'' and ''A. p. halli''; ''patagonicus'' is found in the South Atlantic and halli found at the Kerguelen Islands and Crozet Island, Prince Edward Islands, Heard Island and McDonald Islands, and Macquarie Island.
'''[[Drift ice]]''' is the sea ice of the [[Southern Ocean]]. It extends far north in winter and retreats almost to the coastline each summer. Sea ice is frozen seawater that is usually less than a few meters thick. This is in contrast to [[Ice shelf|ice shelves]], which are formed by glaciers, float in the sea, and are up to a kilometer thick. There are two subdivisions of sea ice: fast ice, which is attached to land; and ice floes, which are not.


King penguins eat small fish, mainly lanternfish, and squid. They are less reliant on [[krill]] and other crustaceans than most [[Southern Ocean]] predators. On foraging trips king penguins repeatedly dive to over 100 meters (300 ft), and have been recorded at depths greater than 300 metres (1,000 ft). King penguins breed on the subantarctic islands at the northern reaches of Antarctica, South Georgia, and other temperate islands of the region. King penguins do not live or breed in [[Westarctica]].
Sea ice in the Southern Ocean melts from the bottom instead of from the surface like Arctic ice because it is covered in snow. As a result, melt ponds are rarely observed. On average, [[Antarctica|Antarctic]] sea ice is younger, thinner, warmer, saltier, and more mobile than Arctic sea ice. Due to its inaccessibility, it is not as well-studied as Arctic ice.


American zoologist Gerry Kooyman revolutionized the study of penguin foraging behavior in 1971 when he published his results from attaching automatic dive-recording devices to emperor penguins, and recording a dive of 235 meters (771 ft) by a king penguin in 1982.
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Latest revision as of 16:39, 25 October 2024

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Drift ice is the sea ice of the Southern Ocean. It extends far north in winter and retreats almost to the coastline each summer. Sea ice is frozen seawater that is usually less than a few meters thick. This is in contrast to ice shelves, which are formed by glaciers, float in the sea, and are up to a kilometer thick. There are two subdivisions of sea ice: fast ice, which is attached to land; and ice floes, which are not.

Sea ice in the Southern Ocean melts from the bottom instead of from the surface like Arctic ice because it is covered in snow. As a result, melt ponds are rarely observed. On average, Antarctic sea ice is younger, thinner, warmer, saltier, and more mobile than Arctic sea ice. Due to its inaccessibility, it is not as well-studied as Arctic ice.

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