FIGURE 57 in Calcareous sponges of the Western Indian Ocean and Red Sea

FIGURE 57. Leucandra pulvinar (Haeckel, 1872), ZMA Por. 13423, from Gulf of Aqaba, Red Sea, SEM images of spicules, a, giant diactines, a1, detail of sharp end of giant diactine, b, trichoxea, b1, detail of same, c, cortical triactine, d, choanosomal triactine, e, atrial triactine.