Treasure map is an item found in the message in a bottle in the Spirit Realm of Aminishi. The bottle is located on the beach below where the Aminishi moai rested and is revealed after talking to all four of the player's crew on each of the three main islands Waiko, Whale's Maw, and Aminishi. The full conditions to see the message in a bottle at this location are currently unknown. The map leads the player to Christmas Island, where they can meet Manti Claws.