The body form of a coral is known as a ‘polyp’. Polyps are tubular, with tentacles and also a mouth at one particular finish. The coral secretes a tough material called calcium carbonate to be a protecting exoskeleton. Coral reefs are shaped by the exoskeletons of coral colonies. Animals vary https://kylerztngx.wikilima.com/1518213/5_simple_statements_about_animal_xxx_explained