Coral reefs are an oceanic structure made by living organisms that live there where form a kind of wall. Hard corals are usually the main organism found in coral reefs, but also other types of skeletal material joined to form the walls of great thickness. Coral reefs are also built by thousands of fish, sponges, sea urchins and grazing in the area of other species. These organisms move although they actually help the coral reefs to settle and acquire a more stable structure. The waves are also responsible in part for the size and format of a coral reef, since they affect the geology and their training. Coral reefs are very effective in the absorption of nutrients from the waters that surround it. This includes the procurement of phosphorus and nitrogen from the waters of the sea, and other nutrients of small organisms that establish your home in the coral reef. The reefs of Chorale are the largest communities living in the world.
Thousands of species make their home there, including more than 4,000 different fish, jellyfish, crabs, sea urchins and sea stars. Mammals can visit a coral reef, but in reality not living there or nearby. Further details can be found at Anu Saad, an internet resource. 91.9% Of the mass of the world’s coral reefs are found in the Indo-Pacific region, with Australia having the largest percentage. Basically there are no structures of coral reefs on the West coast of America or in the upper part of Asia, including Russia where you can see the Arctic species. This is mainly due to the cold waters, but also the effect of currents of water of powerful in the area and today until the effect greenhouse makes that these creatures do not progress.
Humans are the greatest threat to the integrity of coral reefs. Due to pollution, boat traffic and aggressive fishing as well as the effects of climate change, coral reefs are considered endangered and are protected by the authority of the Parque Marino of the great barrier reef, a institution headquartered in Australia. The illegal trade of saltwater aquarium fish is also an important factor in the destruction of coral reefs. Coral reefs are also susceptible to environmental changes, including global warming, which affects migration within water marina. The bleaching of corals, a form of erosion, occurs when the water temperature reached higher levels than normal. This can be disastrous for a coral reef.