23 Sep 2024 —

Coral make up some of the most diverse ecosystems in the world. Thousands of species rely on Corals and the reefs they form for survival.. Corals are formed by multiple small, soft organisms known as polyps.

They secrete a rocky chalk-like (calcium carbonate) exoskeleton around themselves for .... Coral, any of a variety of invertebrate marine organisms of the class Anthozoa that are characterized by skeletons—external or internal—of a stonelike, .... A Coral reef is an underwater ecosystem characterized by reef-building Corals. Reefs are formed of colonies of Coral polyps held together by calcium carbonate..

Corals in the 16th and 17th centuries were of great concern to voyagers who dreaded having their boats wrecked by dangerous formations that ....