Have you seen the coral reefs ? For those who have never and had never been , let's together see and know the reefs close . The coral reef is composed of two words , namely reefs and coral . Can be interpreted as a reef limestone sediments , which is calcium carbonate , which is produced by coral animals and other biota , while corals can be interpreted as a kind of animal that is derived from the order Scleractinia are capable of secreting calcium carbonate . Furthermore , the animals known as coral polyps single or . For the record , you can not interpret the reef separately . If interpreted separately , its meaning will be different .Coral reefs are ecosystems in tropical sea floor is built mainly by the producer of marine limestone ( CaCO3 ) in particular types of corals and calcareous algae , together with the organisms that live on the other as the types of mollusks , crustaceans , echinoderms , polikhaeta , sponges , and tunicates and other biota that live freely in the surrounding waters , including the types of plankton and nekton types .
Types of Coral Reefs :
1 . Coral Reef edge ( fringing reefs )Fringing reefs or coral growing on the majority successor coast of the larger islands . Development can reach a depth of 40 meters with growth upwards and outwards towards the open sea . In the process of its development , this circular reef characterized by the formation of tires or parts of dead coral sediment that surrounds the island . On steep beaches , reefs clearly leads vertically . Example : Bunaken ( Sulawesi ) , P. Panaitan ( Bantam ) , Nusa Dua ( Bali ) .
2 . Coral reefs (barrier reefs )The coral reef is situated at a distance relatively far away from the island , around 0:52 miles toward the open sea is limited by water depth up to 75 meters . Sometimes form a lagoon ( water column ) or slit width waters reach tens of kilometers . Generally, the barrier reef around the island grows very large or continent and form a coral islands disjointed . Example : Great Barrier Reef ( Australia ) , Spermonde ( South Sulawesi ) , Banggai Islands ( Central Sulawesi ) .
3 . Rings Coral reefs ( atolls )A ring-shaped coral reef that surrounds the boundary of the volcanic islands sink so there is no border with the mainland . According to Darwin , coral ring is a continuation of the barrier reef , with an average depth of 45 meters . Example : Taka Bone Rate ( Sulawesi ) , Maratua ( South Kalimantan ) , Island Fund ( NTT ) , and Mapia ( Papua ) .4 . The flat coral reef / sandbar reef ( patch reefs )Coral reefs growing horizontally or vertically with a relatively shallow depth and grows from sea level to the base above sea level . Coral reefs of this kind you can find in the Thousand Islands ( Jakarta ) and Ujung Batu Islands ( Aceh )Functions and benefits of coral reef fisheries system and its role AgainstCoral reefs are tropical shallow marine ecosystems of the most complex and productive . Coral reef ecosystems are also vulnerable to environmental changes , but the pressure they experienced increased along with the increase of population and community activities in coastal areas . The high pressure is caused by the many benefits and functions provided by coral reefs with limited carrying capacity , while the human needs continue to grow over time .By nature , coral reefs are home to many marine species to spawning , nesting , enlargement children , eating and foraging ( feeding and foraging ) , especially for a number of species that have significant economic value . The number of species of marine life that can be found in the coral reef ecosystem make it a storehouse of marine biodiversity . At present , the role of coral reefs as a storehouse of biodiversity making it an important resource for a variety of bioactive materials needed in the medical and pharmaceutical fields .Benefits for our Coral Reefs1 . Sources of fish and other sea foods that contain high protein .2 . Protecting the coast and the population of the lacing waves and currents .3 . Sources of income for fishing ( catch fish ) .4 . Wealth of nautical tourism is highly selling ( fishing , diving , snorkeling ) .5 . Wealth of the sea that can be used as natural medicines .6 . As a natural laboratory for education and research .It turns out that a lot of the benefits of coral reefs yaa .. we should be proud of our country Indonesia . because most of Indonesia consists of water , which certainly contained therein marine resources , one of which is the Coral Reef . For that we as a society have to take care about the environment and preserve the wealth possessed by our country
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