However, boats can hold three figures and move up to three spaces per turn on water. When the player has finished moving their people for the turn they sink part of the island. One of the island sections is removed and any figures on it become swimmers in the water. Then, the underside of the island section is examined to see what is left in its place. There are four types of creature.
Sharks eat swimmers but ignore boats.
Kraken sink boats turning its occupants into swimmers, but ignore swimmers. Sea Monsters eat both boats and swimmers. Finally, dolphins protect swimmers from other creatures. Play continues until the last island section, the citadel, is sunk. The player who has managed to get most of their people to safety is the winner.