Quiet Sound has partnered with Oceans Initiative (OI) and the Puget Sound Partnership (PSP) to support the development of a ‘Noise in Marine Water’ Vital Sign Indicator. Using a combination of moored autonomous hydrophones and self-contained, hand-held hydrophone systems for spot recordings, OI will report on: 1) existing sound levels including anthropogenic noise, and its spatial and temporal variability, and 2) how these relate to known thresholds of noise levels likely to disturb fish and marine mammals. Additionally, OI will use an Automated Marine Acoustic Recorder (AMAR) to calibrate the existing OrcaSound hydrophones on the west coast of San Juan Island.  Quiet Sound will provide OI with whale-vessel interaction expertise to the project and help direct placement of microphones in whale-vessel interaction hot spots. The community benefits from this project will include an open-source, comprehensive acoustic map of Puget Sound that will help identify key areas of high biological importance to the endangered Southern Resident Killer Whales.