The Center for Coastal Monitoring and Assessment (CCMA) conducted the fourth year of an ongoing scientific research mission on board NOAA Ship NANCY FOSTER. The objective of this project was to collect a multibeam bathymetry dataset with 100% seafloor ensonification, along with multibeam backscatter suitable for seafloor characterization in high priority conservation areas within Puerto Rico. Scientists collected high-resolution multibeam in mid-water depths from approximately 10 to 1000 meters.