Maine triples number of sensors that track large sharks Published: 7/11/2021 8:42:04 PM BANGOR, Maine — The state of Maine is nearly tripling the number of acoustic shark detectors in coastal waters a year after the state’s first fatal shark attack. The Maine Department of Marine Resources deployed eight acoustic receivers in coastal waters a year ago between Wells and Popham Beach, raising the number of sensors to 11. This summer, the state has deployed 32 acoustic receivers between York and Boothbay Harbor, said agency spokesperson Jeff Nichols. The sensors don’t provide real-time data. They must be brought to shore for the data to be downloaded to determine if they detected sharks that were previously tagged with transmitters by researchers, the