| Corals vs. snails on a tropical reef |
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An apparently peaceful scene (called "Rainbow Reef" for the variety of colorful reef organisms there, including orange encrusting sponges) belies the life-and-death struggle going on between soft corals—vulnerable, stationary, and edible—and mobile, voracious, predatory snails that can decimate the corals.
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Posted: August 25, 2008
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