"But spare a thought for the coral reefs. In the bad old days before I wisened up, I always slapped on plenty of sunscreen to sit out on the deck during surface intervals on a dive boat or to go for a snorkel. Like so many people, I assumed that because the ocean is so big, a few drops of sunscreen on my skin would have absolutely no effect on the reefs. I was WRONG. It is estimated that 5,000 tons of sunscreen are washed off from people and into the oceans each year. Common Chemicals ...
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