This raster dataset is a 20-meter resolution grid containing shaded surface relief (hillshade) bathymetry data for Monterey Bay, California. These data have been low-pass filtered. Grids are provided in GCS WGS 84 and UTM Zone 10 (NAD 83) projections. This layer is part of the GIS Data of the Monterey Bay collection, a compilation of data and imagery of the Monterey Bay area, including coastline, imagery, and bathymetry.This collection of data provides documented layers of of the Monterey Bay to persons/institutions of interest throughout the research and educational communities. These maps help define the geological variability of the seafloor and provide a detailed framework for future research, monitoring, and management activities.