FIGURE 15 in Sponges from Clipperton Island, East Pacific

FIGURE 15. Spongia (Spongia) sweeti (Kirkpatrick, 1900), A. specimen ZMA Por. 13987, scale bar = 1 cm, B. sample MNHN DCL 4048–D with diversity of forms, C. light microscopic view of cross section showing light incomplete surface armour of sand grains, scale bar = 1 cm, D. light microscopic view of peripheral choanosomal skeleton with cored primary fibers and dense mass of secondary fibers, scale bar = 100 µm, E. light microscopic view of a longitudinal section through a fistule to show characteristic parallel primary fiber system, scale bar = 100 µm.