 रीवs, रीवs में देद रोगs, के एक चिटानु के जिलसला है, तो ज़ावर रीव कते हैं, तो कोरल रीवs में देद रीवs are the actually rocks of calcium carbonate which are actually found by the shells of the corals. तो तो तो तो देद रीवs present in the water, so we can say they are the underwater ecosystem. तो कोरल रीवs are actually the underwater ecosystems which are found by the shells of corals और वो साद बहाु आप देदब लगी साद कोकाल्ष्व करबोनेद करसे, और जॉन लगी रेवs are joined, and they form huge size of the riews. तो थो उना बारमा कोरल रीवs, तो तो कोरल, कोरल रीवs are basically found by the association of the corals, and corals is basically an animal of filemNatedaria whereas there is some specific types of algae that are also present and some of them are also there sorry algae is a zoo松thanila so it means the coral animal live in association with the algae the algae is basically the diatoms of the group coral and zoos and fly they have a mutualistic association with each other so where the corals are present because coral is an association in coral there is an association between the sealant rates are the nadarians and the algae so it means the coral can exist only where sunlight is present because in corals in its makeup algae is also included so where the sunlight or algae are so it means coral will also be there when the reefs are there to permission it so most of the corals they are present in the shallow sea water so present in the shallow sea water relatively warm waters are preferable for the corals so if we see the corals worldwide then the area near the equator where we have near the equator is the area of ​​Blasia Indonesia Philippines some areas are even the north side of Australia near the equator we get more coral reefs there so coral they prefer relatively warm water depth can travel up to 200 meters but the most of the corals they are present from 50 to 60 meters depth so its maximum occurrence of 50 to 60 meters depth is below this because algae does not exist so corals can also not exist zoos and thilly algae which make mutualistic symbiotic situation they cannot survive at very depth so corals are absent in the deep sea how the corals are important if we see the coral reefs corals are required thousands of years to make them so corals are colonial animals so after thousands of years these shells will be so much that they convert to huge reefs now coral reefs are no more surviving so coral reefs are now the habitat of thousands of species of the marine ecosystem so marine ecosystem huge number of species so just for information if you see total area occupied by coral reefs is less than 0.1 percent oceans total area is less than 0.1 percent of coral reefs but the number of species living there is more than 25 percent huge number of species is exactly like earth cave that are tropical rainforest tropical rainforest they are 6 percent and bio diversity that is 50 percent so coral reefs they are 0.1 percent but the marine diversity that they are doing they are more than 25 percent so all types of aquatic animals are present in the corals mainly all small animals all small invertebrates starting from sponges then different types of sponges are there different types of members of nidaria are there neemators are there then the anelids are there crustaceans are there mollusks are there akinodermates are there so all members of different phyla of invertebrates they are present in the coral reefs similarly huge number of fishes so variety of fishers they are present in the coral reefs what is the reason