Figure 16. Large invertebrates from seagrass beds. A. A juvenile queen conch ( Strom- 

 bus gigas ) in a Thalassia bed. (Photo by M.B. Robblee). B. A group of the long-spined 

 Caribbean urchin, Diadetna antillarum , feeding in a Thalassia bed near a patch reef, 



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