Hawaii has become the first U.S. state to ban the sale of sunscreens containing chemicals believed to be harmful to coral reefs.<br /> The new legislation, signed by Governor David Ige this week, will go into effect from 2021.<br />Scientists believe the chemicals oxybenzone or octinoxate, which are found in most sunscreen products, are deadly to developing coral and could cause coral bleaching. <br />Sunscreen containing the two chemicals will only be available to those with a medical prescription. <br />Others will have to use sunscreen without these chemicals or buy it elsewhere. <br />
