Corals, anemones, and jellyfish are marine animals that filter food from water. Soft-bodied, they rely on stinging 'nettles' for protection and, in the case of corals, also build hard cases of calcium carbonate to form coral reefs.
Corals, anemones, and jellyfish are marine animals that filter food from water. Soft-bodied, they rely on stinging 'nettles' for protection and, in the case of corals, also build hard cases of calcium carbonate to form coral reefs.
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