A new set of resources is now available that describe global shoreline characteristics. Ecological Coastal Units (ECUs) were developed by the U.S. Geological Survey (USGS) in partnership with Esri and the Marine Biodiversity Observation Network (MBON). The data allows for the visualization and query of any stretch of coastline on Earth, except for Antarctica. For more information, see Ecological Coastal Units (ECUs) Available by @KeithVanGraafeiland.