Mōkōlea Rock is an islet in Kailua Bay along the windward coast of Oʻahu in Hawaiʻi and located east of Marine Corps Base Hawaii (MCBH).
The islet is more commonly known to local residents as "Birdshit Island", "Birdshit", or simply "Bird" because its black lava rock surface is heavily coated with bird droppings.
[citation needed] There is no vegetation on the islet, which is actually three connected outcroppings, the highest of which is no more than 25 feet (7.6 m) above mean sea level.
Mokolea is part of the windward rim of the Kawainui volcanic caldera.
The shelf is a moderately interesting spot for scuba diving, although much of the time the area is rough, and anchoring a boat is difficult.