FIGURE 4. Selected collection sites as examples of habitats and sponge diversity A: Sponge (Auletta lyrata) and hard corals on rocky beds in Grande Island, Goa, B: Cup-shaped Axinella sp. from Netrani Island, Karnataka, C: Encrusting Spheciospongia vagabunda in the midst of turf algae on the coral beds of Gulf of Mannar, and D: Fan-shaped, Callyspongia (Callyspongia) sp. from Muttom, Tamil Nadu [Photos A.M.George]