FIGURE 9 in Calcareous sponges of the Western Indian Ocean and Red Sea

FIGURE 9. Borojevia tubulata sp.nov., holotype RMNH Por. 10158, from the Maldives, SEM images of sections and spicules, a, view of surface showing pseudopores and large triactines at the surface, b, cross section of tube wall, upper part outside, lower part pseudoatrium, c–f, SEM images of the spicules, c, large triactines from the outer surface, d, smaller triactines from the inner tubuli, d1, sagittal triactine, e, tetractines, f, detail of spined apical actine of tetractine. Please note that rows of spines are in line with the basal radiate system.