A fishing boat sank near Marshall last Monday, unleashing a sheen of diesel fuel over the surface of Tomales Bay before the wreck was refloated and removed. The Marian, a 33-foot wooden vessel, had been anchored in the area for several years and was apparently in derelict condition. The incident is under investigation by the United State Coast Guard and the National Oceanic and Atmospheric Administration.
Teams from three separate agencies—the Coast Guard, NOAA and…