Estuaries are gateways linking oceanic and freshwater spheres. Connectivity through estuarine waters is a key driver of exchange processes for sediment, nutrients and organisms such as diadromous fish. This session is seeking presentations on the geology, oceanography and ecology of coast and estuarine ecosystems. We also invite presentations addressing the outwelling from estuaries, and other aspects of the physical and biological oceanography of various types of estuaries. How the coastal zone is affected by anthropogenic impacts and remediation or restoration efforts are also topics that are welcome.