A great white shark was spotted off Wells on Thursday, prompting officials to clear local beaches. Beachgoers spotted a shark fin about noon off Wells Beach, according to the Wells Police Department. The Maine Marine Patrol later confirmed a great white shark, described as 9 feet long, was spotted near the jetties at the mouth of Wells Harbor, police said Thursday. Searchers were unable to locate the shark, but lifeguards cleared Wells Beach as well as beaches at Drakes Island.