Paratutae Island, also known as Paratà «tai Island, is an island off New Zealand at the mouth of the Manukau Harbour, at Whatipu in the WaitÃÂkere Ranges area.
The island is a portion of a Miocene era volcanic dyke swarm.
In Te Kawerau ÃÂ Maki oral histories, the island was visited by the Polynesian navigator Kupe. A section of the island is known by the name Te Hoe-a-Kupe ("The Paddle of Kupe"), referring to the location where Kupe struck his paddle against the island, to commemorate his visit. The island was the location of a Te Kawerau ÃÂ Maki defensive pÃÂ, guarding the entrance to the Manukau Harbour. Around the year 1700, the pÃÂ was captured by Kawharu, the famed Tainui warrior who led NgÃÂti WhÃÂtua warriors to take the WaitÃÂkere Ranges area. The island is one of the few locations where pre-European MÃÂori textiles have been found, during an archaeological survey in the early 1900s.
The etymology of the island's name is contested. Many attest that the word is a corruption of Paratà «tai, referring to the rise and fall of the tides at the Manukau Bar, while a separate traditional story involves a chief visiting the island and developing diarrhoea after eating too much para fern root (Ptisana salicina), The rocky sections of Whatipu, Motu Paratà «tai, Te Toka Tapu àKupe / Ninepin Rock and Te Marotiri à  Takamiro (Cutter Rock) were collectively known as Te Kupenga àTaramainuku, or "The Fishing Net of Taramainuku".
A signal mast was installed on the island in the 1850s, in order to improve safety for ships entering the Manukau Harbour. In November 1863 during the Invasion of the Waikato, a Waikato raiding party climbed the island and cut down the signal mast. In the latter 19th century, a wharf was constructed on the north-east side of the island. WaitÃÂkere Ranges kauri timber would transported to the Whatipu sawmill and the wharf by tramway. The wharf was used until 1921, and was demolished in 1950.
While originally an island separated from the mainland, the sandbank at Whatipu gradually accumulated during the late 20th century to form a tombolo, so that by 1989 Paratutae had become a tied island.