The document describes several animals found in Antarctica, including Adelie penguins, salmon sharks, various fish species, seals, birds such as the Arctic tern, and whales. Key details provided include the Adelie penguin's breeding and nesting behavior, physical characteristics of the salmon shark, examples of fish such as the ice fish and cod that have antifreeze properties, how seals insulate themselves with thick blubber and give birth on ice, and facts about the Arctic tern and whales that migrate to Antarctica to feed on krill and fish.
![Adelie penguin ,[object Object],Population: 2.5 million pairs Location: Antarctic region Size: About 30 inches tall Weight: 11 pounds Diet: Fish, krill, & other small crustaceans Nests: Circle mounds of small stones & pebbles](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)