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Every map tells a story. We help you tell yours.

Take a quick tour of this state-of-the art ocean mapping and information resource
A map showing artificial reef areas near Long Island

Artificial Reefs of the Mid-Atlantic

Updated map shows new and expanded locations off the coasts of New York, Virginia
Reflections of the sun on the ocean

Marine Heatwaves, HMS Habitat Changes

View areas of recent sea surface temp anomalies, predicted habitat changes for sharks, tuna and swordfish
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Introducing the Aquaculture Theme

Explore areas in Mid-Atlantic waters where activities are permitted or managed by states
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Ocean Acidification Surface Measures

Monthly surface readings available for pH, pCO2, H+, Aragonite Saturation from 2018-22
A black sea bass along the ocean floor

Coastal Fish Trawl Surveys

Seasonal maps show abundance for 14 species in the region's near-shore waters and estuaries
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Download the MARCO Portal Mobile App

Access ocean maps quickly and easily on iOS and Android devices with our free app
Sample map

View Maps

Browse over 6,000 maps showing fishing grounds, marine life habitats and much more in Marine Planner
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How to Use the Portal

Browse our library of tutorial materials, webinars and Portal use case studies
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Portal Mobile App

Download our free app to quickly and easily view ocean maps on iOS and Android devices