The Mid-Atlantic Regional Council on the Ocean (MARCO) is a regional ocean partnership working on issues that benefit from a broad-scale perspective, interstate collaboration, and coordinated problem solving. Established in 2009 by the Governors of New York, New Jersey, Delaware, Maryland and Virginia, MARCO has identified regional priorities for shared action to improve ocean health and contribute to the high quality of life and economic vitality in our region. MARCO provides a valuable forum to pursue mutual goals shared by the Mid-Atlantic states, improve responses to ocean management challenges and opportunities, and collaborate with agencies, key partners, and stakeholder groups to jointly address the region's needs.