A massive luxury yacht owned by Microsoft Corp co-founder Paul Allen destroyed most of a protected coral reef during a visit to the Cayman Islands in the Caribbean earlier this month, media reported.<br />An anchor chain from the vessel damaged nearly 14,000 square feet , or about 80 percent, of reef near two scuba diving sites in the West Bay, the islands' environment department said, according to the Cayman News Service.<br />Allen's Seattle-based Vulcan Inc organization, which manages his fortune, said on Wednesday that the M/V Tatoosh was moored on Jan. 14 in a "position explicitly directed" by the local port authority and that his team was cooperating with the investigation.<br />Allen, who owns the NFL's Seattle Seahawks and the NBA's Portland Trail Blazers, is also a massive benefactor in Seattle and beyond, funding everything from libraries to healthcare initiatives and oceanic exploration projects.