Abstract This four-day field trip will include 21 field stops along a 105-km reach of Maryland’s and Virginia’s barrier-island coast along the Delmarva Peninsula. Along the way, we will cover aspects of barrier-island and nearshore geology and of barrier-island and backbarrier marsh process-response morphodynamic systems in two hydrodynamic settings: (1) the wave-dominated Assateague Island along the northern Delmarva Peninsula and (2) the mixed-energy Virginia barrier islands along the southern Delmarva Peninsula. We will also examine anthropogenic impacts on barrier-island systems at Ocean City Inlet, Maryland, and the National Aeronautics and Space Administration’s (NASA) Wallops Island, Virginia.