This is a very enjoyable lost island adventure movie. A group of men are shipwrecked on an island ruled by a white "master" accompanied by an attractive white woman (Barbara Bach), inhabited by voodoo-practicing natives as well as some CREATURE FROM THE BLACK LAGOON type "fish men". The plot is silly (as in most movies of this type), the acting and the lines are cheesy in most cases, but it is a v-e-r-y polished-looking effort. The scene of Barbara Bach secretly leaving her manor at dawn (or dusk), crossing a shallow lake, and feeding the fish men a potion on the seashore is especially very poetic looking. The undersea footage of the ruins of Atlantis is also very impressive. One minor defect: the voodoo subplot seems to go nowhere. Surely, there are elements of THE ISLAND OF DR MOREAU in the plot, but I think the idea to make this movie was kicked off by previous year's WARLORDS OF ATLANTIS from Britain. By the way, I think the "man whose inside turned outside" tag-line in the movie's US publicity refers to the scene of a man in the lab tank who is slowly being mutated towards a fish man.