When I first started diving finding healthy stag horn and elk horn coral was easy. Unfortunately, finding healthy stag horn and elk horn coral has become more more difficult more recently. You don’t have to look very far in the headlines to see various headlines about coral bleaching. Unfortunately there have been size-able beaching incidents on the Great Barrier reef and around the world. According to the National Oceanic and Atmospheric Administration, 2014 through the end of 2016 will likely be the longest coral bleaching event ever recorded. The current bleaching event is largely blamed on global warming. There can be a number of causes of coral bleaching causes, which among others include:
- oxygen starvation caused by an increase in zooplankton levels as a result of over fishing;
- increased solar irradiance (photo-synthetically active radiation and ultraviolet light);
- changes in water chemistry (in particular acidification caused by CO2 pollution;
- increased sedimentation (due to silt runoff);
- bacterial infections,;
- changes in salinity herbicides;
- cyanide fishing;
- mineral dust from African dust storms caused by drought; and
- four common sunscreen ingredients, that are non-biodegradable that can wash off of skin and on to coral.