Boo Window is a dive site in Indonesia's Ceram Sea, with cave, wall and reef features. It lies within the Misool Marine Reserve and is reached by liveaboard. The site is known for its large underwater windows, openings that rest just below the surface and are popular among wide-angle coral photographers. Big reef fish and whitetip reef sharks are resident at the site. Manta rays, turtles, nudibranchs, seahorses and pipefish are occasionally seen, along with bottom-dwelling sharks. The Misool Marine Reserve protects the surrounding reef and wall habitats that make up the site.