unmanned, remotely operated aircraft. Vaccination studies and vaccination programs. De-worming program to improve juvenile survival. Relocation to the Northwestern Hawaiian Islands. Diet supplements at feeding stations in the Northwestern Hawaiian Islands. Tools to modify undesirable contact with people and fishing gear in the main islands. Chemical alteration of aggressive monk seal behavior. See also Caribbean monk seal Mediterranean monk seal References External links (public service video) Voices in the Sea – Sounds of the Hawaiian monk Seal Endangered fauna of Hawaii Endemic fauna of Hawaii ESA endangered species Mammals described in 1905 Mammals of Hawaii Monachines Natural history of the Northwestern Hawaiian Islands Pinnipeds of Oceania Species endangered by being bycatch Species endangered by disease Species endangered by human consumption