secrete hard limestone outer skeletons Are corals animals or plants? http://oceanservice.noaa.gov/facts/coral.html Are corals animals or plants? polyps coral tiny soft bodied polyps Are Corals Animals or Plants? an answer between a plant and an animal, an answer Are Corals Animals or Plants? As NOAA explains Reefs are living organisms These algae are called zooxanthellae Are Corals Animals or Plants? an answer they are officially animals an answer oceanservice.noaa.gov Are corals animals or plants? Are Corals Animals or Plants? oceanservice.noaa.gov http://oceanservice.noaa.gov/facts/coral.html colonies of limestone polyps