Mana Island is the smaller of two islands that lie off the southwest coast of the North Island of New Zealand (the larger is Kapiti Island). The name of the Island is an abbreviation of Te Mana o Kupe in Maori, which means "The Mana of Kupe". Mana Island is a 3km long, 2.17km² table, with cliffs along much of its coast and a plateau occupying much of the interior. It lies 3km off the North Island coast in the Tasman Sea, west of the city of Porirua and south of the entrance to Porirua Harbour. In 2009, it was selected by the Global Restoration Network as one of the New Zealand's top 25 sites for ecological restoration.