Teams searched the waters off Pocomo Head Tuesday after witnesses saw a kayaker in apparent distress, US Coast Guard Petty Officer Beau Taylor said. Taylor said workers notified the Nantucket harbor master, who then contacted the Coast Guard at 3:56 p.m. “They thought they saw a person waving for help, so they attempted to find means to help the gentleman,” Taylor said. The group went for help and returned to find the vessel in the water with no one nearby, he said. Taylor said the Coast Guard dispatched a boat and a helicopter in the search.Jeremy C. Fox can be reached at email@example.com. Follow him on Twitter @jeremycfox.