An update from USGS Senior Scientist for Ecosystems Roger Sayre on the new Ecological Coastal Units (ECUs) project, as a follow-on from the Ecological Land Units (ELUs) and Ecological Marine Units (EMUs). -------------------------------------------------------------------------------------------------------------------------- Follow us on Social Media! Twitter: https://twitter.com/Esri Facebook: https://facebook.com/EsriGIS LinkedIn: https://www.linkedin.com/company/esri Instagram: https://www.instagram.com/esrigram The Science of Where: http://www.esri.com