<p><strong>Fig. 3.19.</strong> Anatomy of three different simple, vase-like sponges showing (1) spongocoel (2) osculum (3) radial canal (4) flagellated chamber (5) incurrent pore and (6) incurrent chanel.</p>

Fig. 3.19. Anatomy of three different simple, vase-like sponges showing (1) spongocoel (2) osculum (3) radial canal (4) flagellated chamber (5) incurrent pore and (6) incurrent chanel.

Image courtesy of Ewan ar Born, Wikimedia Commons