Island of Rare Animals

The Island of Rare Animals (called "Gold Island" in the English dub) is an island that is covered entirely by forest and has many strange animals on it, most of which are mixtures of two or more normal animals. Gaimon, the only human living on the island, went there about 20 years ago from the present storyline, along with the rest of his crew, searching for treasure, and was left behind. 20 years later, the Straw Hat Pirates arrived. Being the nice guy he is, Luffy helped Gaimon find the treasure chests he was searching for on a rock tower in the middle of the island. However, they were all empty.