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Lindsey MascarenasMr. GawrilukBIO 15516 October 2018Coral Reefs and The OceanCoral reefs, used to be found in many tropical oceans, have decreased in number. Coral reefs are colonial marine invertebrates found underwater in tropical oceans such as Australia or Hawaii. Often mistaken for plants, corals are actually animals. The biology of corals include two different types: hard and soft coral. Hard corals are build the reef and contain crystalized calciumcarbonate, which is a stiff skeleton. As for soft corals, they do not form reefs like the hard corals, but they are vital to the food chain development. Coral reefs are vital to the ecosystem for a number of reasons. A main reasons are they provide habitats; protect coastlines from damaging effects; they are a source of nitrogen and other nutrients; and coral reefs help with nutrient recycling. Including ecological benefits, corals reefs are a source of food for those who live near the coast as well as its biodiversity. Economic benefits include tourism through scuba diving and