The Ootu Peninsula, though connected to the main island of Aitutaki atoll of the Cook Islands, may in many respects be considered as one of the reef islands, being the largest and longest of them. It is located at the northern end of the eastern perimeter of Aitutaki Lagoon to the north and then west of the northernmost true reef island, Akitua, from which is separated by a channel 50 metres wide and less than two metres deep. The southernmost point of the peninsula is called Aumoana. The northernmost point of the peninsula, Teaumera, is also the northernmost point of Aitutaki as a whole.