This is Paul Janensch with a Treasure Coast Essay about Katharine the great white shark. After spending time off the Treasure Coast, she is headed north. Recently she pinged off North Carolina, according to Ocearch, a great white shark research team. A ping is a signal sent to a satellite from a tracking device on her dorsal fin when it breaks the surface. Earlier, she pinged off Titusville, Fort Pierce and Vero Beach. In 2014, Katharine came close to Sebastian Inlet and St.