Difference between revisions of "Template:POTD protected"

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The '''[[crocodile icefish]]''' or '''white-blooded fish''' (''Channichthyidae'') comprise a family of notothenioid fish found in the [[Southern Ocean]] around [[Antarctica]] and southern South America, where water temperatures remain relatively stable (generally ranging from -1.8 to +2.0 °C). Sixteen species of crocodile icefish are currently recognized. All icefish are believed to be piscivorous but can also feed on [[krill]]. Icefish are ambush predators; thus, they can survive long periods between feeding and often consume fish up to 50% of their own body length. Maximum body lengths of 25–50 cm have been recorded in these species.
The '''[[king penguin]]''' is a large species of [[penguin]], second only to the [[emperor penguin]] in size. 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 meters (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]].


To compensate for the loss of hemoglobin, they have larger blood vessels (including capillaries), greater blood volumes (four times that of other fish), bigger hearts, and greater cardiac outputs (fivefold greater) compared to other fish. Their hearts lack coronary arteries, and the ventricle muscles are very spongy, enabling them to absorb oxygen directly from the blood they pump.


<p><small>Photographer: Ambiederman </small></p>
<p><small>Photographer: Liam Quinn from Canada</small></p>
[[:Category:Images|'''(More Featured Images)''']]
[[:Category:Images|'''(More Images)''']]
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Latest revision as of 16:14, 17 October 2025

King Penguin Chick.jpg

The king penguin is a large species of penguin, second only to the emperor penguin in size. 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 meters (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.


Photographer: Liam Quinn from Canada

(More Images)

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