Returning the Urban Sea to Abundance, a report submitted to the US Congress, summarizes the progress made from 2015-2019 in restoring the health of Long Island Sound. It provides an assessment of the first five years of action by the Long Island Sound Study (LISS) under the 2015 Comprehensive Conservation and Management Plan (CCMP), which established general goals and measurable targets to restore the health of the Sound by 2035.