The Massachusetts state office of Energy and Environmental Affairs said three sharks were tagged Tuesday off Monomy Island, near Chatham. The largest of the three was about 15 feet long.
Two more great whites were tagged Saturday by a harpooner working with a state shark expert. Officials said it was the first successful tagging of the creatures off Massachusetts.
The sharks were first spotted last week, prompting officials to close Chatham-area beaches to swimming over the Labor Day weekend.