Ga-Wahi is the region of water on the island of Mata Nui.
Ga-Wahi is the fifth area that the player will encounter. The goal is to find the Turaga (Nokama), to find the three cave portals (resembles hovering small cave entrances), and to find the exit to the level. The major enemy difference is the Bohrok, who are now Gahlok, Kohrak, and Nuhvok instead of Pahrak, Lehvak, and Tahnok. They roll twice before opening instead of once. Otherwise, other than the two new swimming Rahi, the enemies are the same. The level is divided into four parts.