Mānana Island is an uninhabited islet located 0.75 mi (1.21 km) off Kaupō Beach, near Makapuʻu at the eastern end of the Island of Oʻahu in the Hawaiian Islands. In the Hawaiian language, mānana means "buoyant". The islet is commonly referred to as Rabbit Island, because its shape as seen from the nearby Oʻahu shore looks something like a rabbit's head and because it was once inhabited by introduced rabbits. The rabbit colony was established by John Adams Cummins in the 1880s when he ran the nearby Waimānalo plantation.The rabbits were eradicated about a hundred years later because they were destroying the native ecosystem, an important seabird breeding area.