Sasaki, N. 1940. The freshwater sponges of Tisima-Rettó (The Kurile Islands). Scientific Reports Tôhoku Imperial University (4, Biology) 16: 165-186.[details]
de Voogd, N.J.; Alvarez, B.; Boury-Esnault, N.; Cárdenas, P.; Díaz, M.-C.; Dohrmann, M.; Downey, R.; Goodwin, C.; Hajdu, E.; Hooper, J.N.A.; Kelly, M.; Klautau, M.; Lim, S.C.; Manconi, R.; Morrow, C.; Pinheiro, U.; Pisera, A.B.; Ríos, P.; Rützler, K.; Schönberg, C.; Turner, T.; Vacelet, J.; van Soest, R.W.M.; Xavier, J. (2025). World Porifera Database. Ephydatia fortis var. etorohuensis Sasaki, 1940. Accessed at: https://marinespecies.org/porifera/porifera.php?p=taxdetails&id=195436 on 2026-08-07
original descriptionSasaki, N. 1940. The freshwater sponges of Tisima-Rettó (The Kurile Islands). Scientific Reports Tôhoku Imperial University (4, Biology) 16: 165-186.[details]
source of synonymyPenney, J.T.; Racek, A.A. (1968). Comprehensive revision of a worldwide collection of freshwater sponges (Porifera: Spongillidae). <em>Bulletin of the United States National Museum.</em> 272: 1-184., available online athttps://doi.org/10.5479/si.03629236.272.1 page(s): 95 [details]
Present Inaccurate Introduced: alien Containing type locality
Website and databases developed and hosted by VLIZ · Page generated 2026-09-05 · contact: Nicole de Voogd