Coral Reefs in Jeopardy – Vanishing Faster than Rain Forests
By Carol and Rob Trow
UV blocking chemicals, found in many popular sunscreens ( parabens, cinnamare, benzophenone, camphor derivatives), can rapidly cause viral infections that promote coral bleaching which kills off coral even if present in small amounts. Twenty five percent of sunscreen applied to the skin is released in the water during the course of only twenty minutes. The presence of these chemicals produces high levels of viral infections that kill off algae necessary for coral reefs to survive.
Those swimming, snorkeling and diving near coral reefs should not wear sunscreens with the above named ingredients as they are causing the coral to die.
Reefs that are exposed to humans wearing sunscreens are in jeopardy. Some chemical components contained in most commercial sunscreens cause the rapid and complete bleaching of hard corals, even at very low concentrations. Accordingly, they observed that the corals’ bleaching was more rapid and evident at higher temperatures, suggesting that the predicted warming of oceans’ temperature could potentially augment the sunscreens’ harmful effects on the corals’ bleaching. Since they estimated that roughly 4000–6000 metric tons of sunscreen annually wash off swimmers into reef waters, sunscreens are promoting viral infections of algae that play an important role in coral bleaching (killing of coral) in those areas more prone to high levels of recreational use by humans. This does not mean the complete banning of sunscreens – which are essential for protecting our skin from cancer – rather they have suggest the use of more eco-compatible filters such as kaolin, zinc oxide, titanium dioxide and the like. Use of sunscreens that have physical, reflective filters and eco-friendly chemical ingredients will help our
critically important coral environment survive.
There is a better way. Do not use sunscreen! We will tell you how next time.

June 22, 2010 


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