Club Penguin Island is somewhere in Antarctica. Some people claim it to be Penguin Island (just off King George's Island). RockhopperIsland is rumoured to be Christmas Island, off the coast of Western Australia. This is unlikely as it would take months and months to go to Penguin Island from there, even in a clipper ship such as the Migrator.
Lots of penguins.
Icebergs looks suspiciously like one off Penguin Island.
Mountains is said to be Deacon Peak, a real mountain.
Club Penguin Island is extremely cold, and it's always covered in snow. As seen in the comic section of the website, the Club Penguin Times does not include weather reports because it is always cold.
Several animals inhabit the island, the main of them being penguins. Other animals include crabs, worms, jellyfish, starfish, sharks, mullets, grey fish, yellow fish (which conform a large part of the feeding of the penguin population), clams (most notably Big Bertha off the northeast coast), corals, shrimp, squids, an octopus, a lone polar bear, squid, giant squid, a giant puffer fish, and puffles (which have been domesticated and can be adopted as pets, though wild ones still remain in the wilderness). Due to the extremely cold climate of the area, the flora of the island is limited to pine trees, seaweeds, and 'O' Berry bushes.
Iceberg
-The Iceberg was mysteriously discovered in March 2006. It's just a small iceberg next to Club Penguin Island. It can only be accessed from the Map, Spy Phone and by crashing on Level 3 of the Jet Pack Adventure game . No one is sure where it came from, or how long it had been there, but it's been a popular party destination ever since. The Iceberg is only visited by penguins and puffles. It looks like one off Penguin Island.