WHAT ARE CORALS?

Introduction to Coral An individual coral is known as a “polyp”. They are living animals that secrete calcium carbonate to form hard skeletal structures called reefs. Coral lives a symbiotic relationship with a unicellular microscopic alga called zooxanthellae. Coral get their colors from these algae. Algae give off oxygen and other nutrients that the coral …

WHAT ARE CORALS? Read More »