The Earth Day 2011 was a party which began on April 21 and ended on April 26. It is Club Penguin's second Earth Day Party. It was confirmed in the Parent's Update email and the Club Penguin Times. It was based on the support wildlife initiatives, such as the African Painted dog and the Snow Leopard. There was no party room. It celebrates the animals, especially the endangered ones. Herbert and Protobot were going to attack at this party. There were stamps for this party, which have been confirmed to be called "Go Green" and "Tree Mob" as revealed by the stamp files. Rockhopper showed up for this party. At the same time, because of Easter, there were Easter Eggs during this party.