Halichondria panicea, the bread crumb sponge, is a species of demosponge. It is abundant on the North Atlantic and Mediterranean coasts, and also found on the Pacific coasts, ranging from the intertidal to a depth of 550m. It is found on rocky substrate.
Van Soest, R. (2016). Halichondria panicea (Pallas, 1766). In: Van Soest, R.W.M; Boury-Esnault, N.; Hooper, J.N.A.; Rützler, K.; de Voogd, N.J.; Alvarez de Glasby, B.; Hajdu, E.; Pisera, A.B.; Manconi, R.; Schoenberg, C.; Tabachnick, K.R., Klautau, M.; Picton, B.; Kelly, M.; Vacelet, J.; Dohrmann, M.; Díaz, M.-C.; Cárdenas, P.; Carballo, J. L. (2016). World Porifera database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=132627 on 2016-06-29