Like Manra, Orona is covered with coconut palms (mostly on the western side), towering above the surface. The remainder of the atoll is covered with scrub forest, herbs, and grasses, with a maximum height of . Feral cats exist on the island, together with rats, pigs, and dogs. Ducks and chickens were raised by the former inhabitants, but it is unknown whether any remain. Orona also boasts three species of lizards, land and hermit crabs, together with approximately fifty species of insects. Turtles are also known to use the island as a nesting area.