Living animals. A, Armina magna Baba, 1955, CASIZ 173357, Panglao, Philippines, photo by Marina Poddubetskaia. B, Armina paucifoliata Baba, 1955, CASIZ 171415, Panglao, Philippines, photo by T. Gosliner. C, Dermatobranchus albus (Eliot, 1904), Panglao, Philippines, photo by Marina Poddubetskaia. D, E, Dermatobranchus albus (Eliot, 1904), CASIZ 174129, Tulear, Madagascar, photos by T. Gosliner. F, Dermatobranchus albus (Eliot, 1904), CASIZ 068678, Madang, Papua New Guinea, photo by T. Gosliner. G, Dermatobranchus fortunatus (Bergh, 1888), after Bergh, 1888. H, Dermatobranchus fortunatus (Bergh, 1888), CASIZ 174198, Palmyra Atoll, photo by T. Gosliner. I, Dermatobranchus fortunatus (Bergh, 1888), CASIZ 074158, Mahe, Seychelles, photo by T. Gosliner.