The main cause of the coral bleaching is the heat from global warming , El Nino phenomenon and Salinity caused by the influence of freshwater. All cause are caused by human actions. If human being aren’t aware of the phenomenon of coral bleaching. A variety of different creatures that live coral reefs as living as food or as a source of refuge can't live without it. The economy more humans we use that live in the coral reef will decrease. All recreational attractions available disappears too