Coral reefs<br />(Rainforests of the sea)<br />
What are they?<br />Corals are colonies of small animals living in an area with a low level of nutrients.<br />Coral reefs are underwater structures made from calcium carbonate.<br />They take up less that 0.1% ofthe world’s oceans however it is home to 25% of all marine species.<br />
Global Location<br />Coral reefs are usually located in the Pacific ocean and flourish best in clear shallow warm waters.<br />The map below shows the location of coral reefs around the globe.<br />
Environmental Benefits<br />It houses 25% of all marine species in the world. This includes fish, molluscs, echinoderms and sponges.<br />It also provides shoreline protection via friction which causes things such as tsunamis to slow down and therefore cause less damage.<br />
Social and Economic Benefits<br />Coral reefs provide a key economic service. Coral reefs around the globe are valued at approximately $30 Billion!!!<br />They are especially good for tourism as many people like to visit and see these by Scuba Diving. <br />
Why are they at risk?<br />Coral reefs have been suffering a major threat from climate change, ocean acidification, blast fishing, cyanide fishing for aquarium fishing. This has been increasing for the past 10 – 20 years <br />High nutrients around coral reefs from agricultural runoff cause and increase in algae growth which ultimately causes the coral reef to die. <br />Other risks that threaten coral reefs are coral mining, pollution, over fishing and the digging of canals.<br />It is estimated that 10% of the world’s coral reefs have already died at that 60% are at risk of human threats.<br />80% of the coral reefs in South East Asia are endangered.<br />
Strategies to protect them!<br />MPAs or Marine Protection Areas are on of the most prominent forms of reef management. They promote responsible fishing practices and habitat protection.<br />In Australia, the Great Barrier Reef is protected by the Great Barrier Reef Marine Park Authority, and is the subject of much legislation, including a Biodiversity Action Plan.<br />
A particular slide catching your eye?
Clipping is a handy way to collect important slides you want to go back to later.