Prehistoric Island

To spawn the Prehistoric Island, players need to sail into Sea Danger Level 6 (????) and continue exploring until the island appears. The island can spawn even if the player in the boat does not have the Volcanic Magnet, but having it increases the chances of the island spawning drastically. Thus, it is recommended for at least one player to have a Volcanic Magnet in the sea exploration group if they're hunting for the Prehistoric Island.