Mānana Island Seabird Sanctuary is the largest offshore islet in Oʻahu at 67 acres. This seabird sanctuary is closed to the public. Non-native invasive weeds, rats, tropical fire ants, and yellow-crazy ants threaten this islands habitat. Restoration efforts of this islet are crucial due to the amount of seabirds that call it home such as Wedge-tailed shearwater (ʻUaʻu kani), Bulwer's Petrel (Oʻu), Red-tailed Tropicbird (Koaʻeʻula), and Sooty Tern (ʻEwaʻewa). It is also known unofficially as Rabbit Island.