The body form of a coral is called a ‘polyp’. Polyps are tubular, with tentacles as well as a mouth at one conclusion. The coral secretes a hard material identified as calcium carbonate as being a protecting exoskeleton. Coral reefs are shaped because of the exoskeletons of coral colonies. Animals https://animal-sex05948.nico-wiki.com/1628499/5_simple_statements_about_animal_xxx_explained