The City just received notice that Sector San Francisco had received several notifications in reference to a brown/red substance in the Bay Area and off shore. This substance is RED TIDE algal bloom. CA Fish & Game indicated this substance is moving into the area, which is why we wanted to inform you of it now. Do not be alarmed, it is NOT the result of an oil or hazardous material spill. Please see the below photo that was confirmed ride tide last week in the Oakland Estuary. If you're interested in learning more about red tide, please click here.