17 – Sponges
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(D)
(A)
(G)
(E)
(C)
(H)
(F)
(B)
Figure 17.4 A–B, sponges of the reef flat and shallow lagoon, including the cryptic, coral rubble, and under-boulder
communities: A, Hyrtios erecta; B, Suberea ianthelliformis. C–H, reef-builders and cave faunas: C, Leucetta chagosensis;
D, Levinella prolifera; E, Ulosa spongia; F, Soleniscus radovani; G, Astrosclera willeyana; H, Petrosia (Strongylophora)
strongylata. (Photos: J. Hooper.)