What is the difference between hard coral and soft coral?
Corals are marine (saltwater) invertebrate animals that usually form colonies of individual polyps, mainly in tropical reefs.
Hard coral is also called stony coral.
Hard coral is in the sub-class Hexacorallia (hexa means six), whereas bue coral and soft coral are in the sub-class Octocorallia (octo means eight).
Hard coral is in the Scleractinia order, whereas soft coral is in the Alyconacea order.
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