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Date : 1997-09-22
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Coral reef Wikipedia ~ A coral reef is an underwater ecosystem characterized by reefbuilding corals Reefs are formed of colonies of coral polyps held together by calcium carbonate Most coral reefs are built from stony corals whose polyps cluster in groups Coral belongs to the class Anthozoa in the animal phylum Cnidaria which includes sea anemones and jellyfish
Coral reef geology Britannica ~ A coral reef is actually a complex of features only part of which is a living coral or algal framework although the other associated features result from this live segment The accumulations of carbonate sand and mud provide a habitat for sea grasses and mangroves and for almost inconspicuous bluegreen algal mats
Corals and Coral Reefs Smithsonian Ocean ~ Coral reefs are the most diverse of all marine ecosystems They teem with life with perhaps onequarter of all ocean species depending on reefs for food and shelter This is a remarkable statistic when you consider that reefs cover just a tiny fraction less than one percent of the earth’s surface and less than two percent of the ocean bottom
What Are Coral Reefs Live Science ~ Coral reefs are typically divided into four categories according to CORAL fringing reefs barrier reefs patch reefs and atolls Fringing reefs are the most commonly seen reef and grow near coastlines Barrier reefs differ from fringing reefs in that they are separated from the coastlines by deeper wider lagoons
Coral Reefs Biscayne National Park National Park ~ Coral reefs are among the most biologically diverse ecosystems on earth Every crack and crevice seems to be occupied Knowledge of reefs is constantly growing This knowledge will be increasingly valuable as reefs around the world experience problems from pollution overfishing boat groundings climate change marine debris and disease
Coral reef ecosystems National Oceanic and Atmospheric ~ Coral reef diversity Because of the diversity of life found in the habitats created by corals reefs are often called the rainforests of the sea About 25 of the oceans fish depend on healthy coral reefs Fishes and other organisms shelter find food reproduce and rear their young in the many nooks and crannies formed by corals
NOAA CoRIS What are Coral Reefs ~ What are Coral Reefs Appearing as solitary forms in the fossil record more than 400 million years ago corals are extremely ancient animals that evolved into modern reefbuilding forms over the last 25 million years Coral reefs are unique the largest structures on earth of biological origin and complex systems
Reef Wikipedia ~ A reef is a bar of rock sand coral or similar material lying beneath the surface of water
Coral Reef Restaurant Walt Disney World Resort ~ Coral reefs are crucial to the biodiversity of the worlds oceans They cover less than 1 of the ocean floor but provide food and shelter to over 25 of all ocean creatures—up to 2 million species Disney scientists and conservationists are working hard in Florida and
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