This line shapefile represents the coastline of California, ranging from El Grenada south to (approx.) Cayucos. This layer includes the survey region of the MBARI Mulitbeam Survey of 1998. 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 oceanographic research, monitoring, and management activities.