Sunscreen is essential for shielding your skin from the sun’s harmful rays – both on holiday and at home. But while it protects you, is it harming the environment around you? If you’ve ever lathered up then jumped into the sea, the answer is likely to be ‘yes’. Many of the chemicals contained in sunscreen are especially damaging to coral reefs and ocean life. It is estimated that over 5,000 tonnes of sunscreen wash off swimmers and into oceans worldwide, according to the US National Park Service. Expand that to all waterways, including rivers and lakes, and the number is closer to 13,000 tonne…