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. The adult male was found on Nov. 1 on Ocean Beach sand dunes in the town of Denmark in temperate southwest Australia — about 3,500 kilometers (2,200 miles) north of the icy waters off the Antarctic coast, the Western Australia state government said. The boat traveled for several hours from the state’s most southerly city of Albany before the penguin was released into the Southern Ocean, but the government didn't give the distance in its statement.