The Great Barrier Reef
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(A)
(C)
(E)
(G)
(H)
(F)
(D)
(B)
Figure 17.3 Sponges of the reef flat and shallow lagoon, including the cryptic, coral rubble, and under-boulders communities: A, Myrmekioderma granulate; B, Leucetta microraphis; C, nudibranchs feeding on Clathria (Microciona) aceratoobtusa (photo: B. Rudman); D, Stelletta sp.; E, Haliclona nematifera; F, Aplysinella rhax; G, Chelonaplysilla sp.; H, Gelliodes
fibulatus. (Photos: J. Hooper, except where noted.)