Hawaii seeks to ban ‘reef-unfriendly’ sunscreen

Legislators in Hawaii are trying to ban the sale of sunscreens that contain two UV-filtering chemicals, after studies suggested that they harm coral reefs. On 20 January, Hawaii state senator Will Espero introduced a bill which would ban sunscreens containing oxybenzone and octinoxate in Hawaii (except under medical prescription) to the state Congress. Research team detected oxybenzone contamination of up to 4,000 parts per trillion (ppt) in the waters off the most popular beaches of the Hawaiian island of Maui. An oxybenzone concentration of around 400 ppt over several days is enough to induce coral bleaching in warm waters, they say.

— source nature.com

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