FIGURE 11 in Calcareous sponges of the Western Indian Ocean and Red Sea

FIGURE 11. Borojevia tubulata sp.nov., ZMA Por. 12435, from the Seychelles (Amirantes region), a, preserved habitus of fragmented tubes (scale bar = 1 cm), b, cross section of flattened tube with slit-like flattened pseudoatrium, c–f, SEM images of spicules, c, large triactine of the surface, d, small triactine of the interior skeleton, e, tetractines, f, details of spined apical actines of the tetractines.