The Three Characteristics Of Coral Reefs And Anthozoans

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Coral reefs are Anthozoans. Scientists classify them as animals. They are the largest class of organisms in the phylum cnidarian. There are more than six thousand species. Coral reefs are communities of living things. They are known as the “rainforests of the oceans.” This is because there are sea slugs, oysters and many other creatures living there. Corals are animals related to anemones and jellyfish. They extend their tentacles to sting. A polyp is an individual coral consisting of a stomach with a tentacle-bearing mouth. Thousands of them live together forming a colony. Sponges are one of the earliest animals in the coral reef. They appear in a lot of different shapes and colors. They provide shelter for many of the sea life such as …show more content…
They are all alike in the biogeographic features. Fringing is the most common. They create borders along the islands around and the shoreline. Barrier also borders the shoreline except they are separated by land. This creates a lagoon of open and deep water between the shore and the reef. An atoll is a ring shaped island, coral reef or a series of islets. The source of energy for the coral reef ecosystem is sunlight. Algae, phytoplankton and other plants turn light energy into chemical energy. This is through photosynthesis. Energy is passed through. The zooxanthellae give off food and oxygen to the coral. This is also through photosynthesis. Marine algae are very small plants. They don’t have stems, leaves or roots. Algae give off food for smaller fish and other sea life. The Great Barrier Reef in Australia includes 500 species of algae. Sea grapes and lettuce are common green algae. Most seagrasses are in underwater meadows. They still grow in protected and shallow waters of back reefs. Back reefs are located between the shore and the coral reef. Seagrasses provide shelter for animals such as lobsters and conch. It helps trap sediment loads near coral …show more content…
Animals in the ocean use them as either an oasis, a stopping point, as they travel the sea or they are residents. Corals are tiny organisms called polyps. The reef is an apartment for the life. Coral can be basically any color pink, purple, orange, blue, white, red or green. This is due to the zooxanthellae in the tissue or the natural pigments. Coral reefs provide humans protection, food, medicine, habitat and income. The first one is protection for beaches, communities and coastal cities. The next one is food for people living close to the coral reefs. They provide potential treatments for many people. The next one is a habitat for over one million aquatic species. This includes thousands of fish. The last one is income. This includes over a million jobs and thousands of dollars in over one hundred countries. Coral reefs have a lot of threats. The biggest one is weather related. Cyclones and hurricanes can flatten large coral heads or break apart. This scatters their fragments. A single storm kills a whole colony. Another threat is tidal emersions. Long periods of very low tides leave shallow coral heads which damages reefs. The amount of damage has to do with weather conditions and time of day. If it is daylight, corals are subjected to the most ultraviolet radiation. This can dry out and overheat the coral

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