Tell us about the sea slugs & nudibranchs in your country! There are currently 36,557 photos posted with 1,910 registered species. Search for nudibranchs by color more Newly arrived nudibranchs more Trinchesiidae sp. 3 Sacoproteus nishae Krug, Wong, M. R. Medina, Gosliner & Á. Valdés, 2018 Trapania sp.19 Aglajidae sp. 9 Aglajidae sp. 8 Tambja spp. Discodorid sp.17 Martadoris sp. 2 Newly submitted photos more Trinchesia sp.62 Polycera abei (Baba, 1960) Polycera fujitai Baba, 1937 Facelinid sp. 2 Thecacera picta Baba, 1972 Colpodaspis thompsoni G. H. Brown, 1979 Mariaglaja tsurugensis (Baba & Abe, 1959) Pteraeolidia semperi (Bergh, 1870)