Tarakava
Rahi on Mata Nui come in many shapes and sizes, from the tiny Fikou spider to the fearsome Kane-Ra. Some are intelligent, others are cunning, and a few can be tamed.
Tarakava live in the oceans and rivers of Mata Nui, preferring the shallows close to the shoreline. They are huge, lizard-like creatures that almost always hunt in pairs. Those Matoran villagers who sail the waters of Mata Nui have learned to fear the Tarakava more than any other Rahi. Like all Rahi, the infected masks they wear control Tarakava. If the masks are removed, they will cease fighting and can sometimes even be tamed. The Matoran villagers of Ga-Koro often take pity on stunned Tarakava and bring them into their village to care for them.