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2:44
YouTube
California Academy of Sciences
How Do Corals Build Reefs? | California Academy of Sciences
Let's look inside a polyp to see how it helps build a reef. It takes carbon from algae and seawater, turns it into calcium carbonate, and uses this chalky substance to build an internal skeleton. This visualization showing the interior of the polyp during the skeleton-building process will change your understanding of how hard corals construct ...
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Dec 28, 2018
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Most reef-building corals rely on partnerships with algae, or zooxanthellae, which live in their tissue. The coral serves as a home and provides products for photosynthesis, and in return the algae remove wastes and supply the coral with nutrients resulting from that photosynthesis. An added bonus is the algae giving corals their unique and beautiful colors! https://oceanservice.noaa.gov/education/tutorial_corals/coral02_zooxanthellae.html 📷: NOAA Fisheries/Damaris Torres-Puliza | NOAA Coral Re
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