With nearly 100% coral coverage over most of the area, and higher coral diversity than most places on Oahu, Horseshoe Reef is a spectacularly beautiful site. That it sites right off downtown Honolulu makes it all that much more amazing. To those with a good imagination, the reef is shaped roughly like a horseshoe and depths range from 35-55’. With all this high quality habitat you can find lots of organisms that make their homes in corals.