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Feeding Coral on the Great Barrier Reef<br> Snorkeling in Great Barrier Reef picture - Coral reefs are made up of millions of billions of individual polyps, tiny filter-feeding animals. They secrete a hard skeleton of calcium carbonate, but when actively feeding, you can feel the soft animals inside which kind of suck at your fingers.
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Coral reefs are made up of millions of billions of individual polyps, tiny filter-feeding animals. They secrete a hard skeleton of calcium carbonate, but when actively feeding, you can feel the soft animals inside which kind of suck at your fingers.
Australia
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image -- 1818 x 1228)