Melbourne, Australia — The only emperor penguin known to have swum from Antarctica to Australia was released at sea 20 days after he waddled ashore on a popular tourist beach, officials said Friday.

A malnourished emperor penguin appeared on a beach in Australia, thousands of miles from its home in Antarctica. Wildlife experts rescued the bird and took it to a rehabilitation center. A beachgoer ...

Emperor penguins are renowned cold-weather specialists that can survive blustery winds and temperatures of around minus 40 degrees Fahrenheit during the Antarctic winter. So, what was one doing on a ...