Environmental groups on Wednesday urged a moratorium on deep-sea mining ahead of a meeting in Jamaica of a U.N. body that conservationists fear will soon authorize the world’s first license to harvest minerals from the ocean floor. More than 20 countries have called for a ban or moratorium on deep-sea mining ahead of Monday's opening of a nearly two-week meeting of the U.N. International Seabed Authority’s council. Companies including Samsung and BMW also have pledged to avoid using minerals mined from the deep sea.