Sarah Gladu, Damariscotta River Association Education Coordinator, will present the findings of her recent investigation into the health of the Damariscotta River Estuary. She will report on a variety of indicators of the estuary’s condition including mercury and invasive species. Potential future threats to the health of the estuary will also be discussed. Bristol Town Office. FMI: 563-1393, dra@damariscottariver.org.