The Hawai`i Institute of Marine Biology (HIMB) is a marine biology laboratory located on the state-owned Coconut Island in Kāne'ohe Bay. Coconut Island is approximately 29 acres, including 6 acres of enclosed lagoons used to keep organisms being studied in captivity. Surrounding it are 64 acres of coral reef, designated by the state of Hawai‘i as the Hawai‘i Marine Laboratory Refuge. It is part of the University of Hawaii at Manoa.