Marine Habitats

Enhancing management of ocean ecosystems that extend across borders

Water Quality

Advancing regional-scale efforts for healthy, clean ocean waters

Coastal Communities and Economies

Building knowledge and preparation for ocean and coastal changes

Environmentally Responsible Marine Development

Sharing data, stakeholder perspectives for improved decision-making

About MARCO

MARCO is the Mid-Atlantic Regional Council on the Ocean, formed in 2009 by a governors’ agreement among New York, New Jersey, Delaware, Maryland, and Virginia.

MARCO Partnership Opportunities

Mid-Atlantic Ocean Data Portal

The Portal is an ocean planning resource center featuring the Marine Planner, an interactive mapping tool.

Check out the latest Portal News & Updates!

Mid-Atlantic Ocean Planning Committee

The Mid-A OPC is a committee established by MARCO to foster collaboration among states, federal agencies, the Mid-Atlantic Fishery Management Council, and federally recognized tribes, and to engage stakeholders.

News & Updates

Trash on a beach

Microplastics and Producer Responsibility

August 22, 11 a.m.

Register for our upcoming webinar examining regional and federal policies addressing marine microplastics and plastic waste.

Requests for qualifications

Workforce Development Fellowship: Request for Qualifications

Mid-Atlantic Coastal Acidification Network fellowship aims to provide immersive, real-world learning opportunity.

A closeup view of the ocean surface.

Request for Qualifications: Marine Debris & Ocean Conservation Fellow

MARCO seeks applications for a one-year opportunity for students or early career professionals. 

A diagram illustrating how ocean acidification occurs

MACAN Educational Video Series

This four-part series will introduce you to the sources of coastal and ocean acidification, its impacts on coastal habitats, fisheries, and livelihoods, and the technology scientists are developing to monitor acidification and remove carbon dioxide from the ocean.

An image of a blue crab statue overlooking Baltimore Harbor with text reading: Save the Date The Seventh Annual MID-ATLANTIC OCEAN FORUM MAY 6-7, 2025 | Baltimore, MD

The 2025 Mid-Atlantic Ocean Forum

Thanks to all who participated in Baltimore for this year’s event. Click here to view videos of the panels and presentations.