what causes coral bleaching , what are coral reefs

What is coral reef in simple words?

Coral reefs are made up of colonies of hundreds to thousands of tiny individual corals, called polyps. These marine invertebrate animals have hard exoskeletons made of calcium carbonate, and are sessile, meaning permanently fixed in one place.

What are coral reefs answer?

Coral reefs are made up of tiny organisms called polyps. The polyps are soft-bodied but secrete limestone skeletons for support. Large, iconic reefs are formed when many, many polyps come together and build on one another. The result is a colony of polyps that actually act as one organism!6 Dec 2018

What is a coral reef and why is it important?

Coral reefs protect coastlines from storms and erosion, provide jobs for local communities, and offer opportunities for recreation. They are also are a source of food and new medicines. Over half a billion people depend on reefs for food, income, and protection.1 Feb 2019

What is a coral reef for kids?

A coral reef is a structure in shallow ocean areas that is formed mainly by stonelike coral skeletons. Corals are small marine animals that live in all oceans of the world. Some individual corals, called polyps, are colonial, which means they grow together in large groups called colonies.


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