Coral Reefs and Marine Habitats.  Half the acreage of Kaloko-Honokohau are marine waters.  These are an exceptional sample of the Kona Coast waters noted for their exceptional clarity and rich marine biodiversity.  This is a friendly reef accessed daily by several dive boats, and readily accessible from shore snorklers by way of the Aiopio Fish Trap.  A brief sample of the rich sea life can be viewed on the reef section of the park’s illustrated Species Checklist.

Technical reports on the park's marine resources--

Parrish, J. D., G. C. Smith, and J. E. Norris. December 1990. Resources of the marine waters of Kaloko-Honokohau National Historical Park.  University of Hawaii Cooperative Ecosystem Techn. Rpt. 74.