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Changes in the Mid-Atlantic

Converting ocean acidification data into insights about the species living in our water.

Species impact

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Marine phytoplankton are microscopic, photosynthetic organisms that form the foundation of the ocean's food web and produce over half of Earth's oxygen.

Marine Phytoplankton

Deep-sea corals are cold-water ecosystems that thrive without sunlight, providing vital habitats for diverse marine species.

Deep-Sea Corals

Finfish (any fish with a fin versus a shell) are a diverse group of fish species essential for marine ecosystems and a vital resource for global fisheries and aquaculture.

Finfish

SAV, comprising attached macroalgae and seagrass species, support coastal ecosystems by providing habitat, improving water quality, and buffering against climate change impacts.

Submerged Aquatic Vegetation (SAV)

Our crustacean species are ecologically important, and critical to the economy of the Mid-Atlantic.

Crustaceans

Mollusks are a varied group of soft-bodied animals, many of which have hard shells. They are essential to both marine ecosystems and human economies.

Mollusks

Zooplankton are tiny drifting animals that play a critical role in aquatic food webs, linking phytoplankton to larger marine species.

Zooplankton

Ecosystems are highly complex webs of species that mix in space and time, creating intricate relationships that can be difficult or complex to study.

Ecosystems

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Species Impact

Explore changes in the mid-atlantic storymap

Our storymap explains that and so much more.

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Resources

OA Policies can vary state-to-state and are also different at the federal level. For the most up-to-date policies regarding ocean and coastal acidification, make sure to check resources within your own state and municipality.

Introduction to OA POLICY

Action Planning By State

Ocean Acidification Policy

OA Action Plan Toolkit

Supporting OA Action Planning and Implementation Workshop

Supporting OA Action Planning and Implementation Workshop Summary

MACAN’s 2023 Mid-Atlantic Coastal and Ocean Acidification Workshop

Ocean Climate Action Plan

History of Acidification Legislation in the USA

The United States Ocean Acidification Action Plan

Maryland Ocean Acidification Action Plan 2020

New York Ocean Acidification Task Force Final Report

Stakeholder and Subject Matter Expert Feedback Regarding the Content of a New Jersey Ocean Acidification Action Plan

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Contact Us

View Macan's 2024-2028 Work plan

If you are interested in learning more about MACAN and the work we do, please sign up for our <a href="/subscribe/">monthly newsletter</a>. You can also read our <a href="https://cms.midacan.org/wp-content/uploads/2025/09/MACAN-5-Year-Workplan-2024-2028.pdf" target="_blank" rel="noopener">2024 to 2028 Work Plan</a>.

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About Us

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MACAN’s committed to understanding, predicting, and mitigating the impact of acidification on our oceans and coastal ecosystems.

A collaborative team committed to addressing the pressing environmental issue of coastal acidification in our region.

What is Acidification

Increased atmospheric carbon dioxide drives ocean acidification, lowering pH.

Diverse monitoring addresses complex coastal and estuarine acidification drivers.

Factors such as geography, climate, and human activities vary across different regions, impacting the extent and rate of ocean acidification.

Ocean acidification is driven by excess global carbon dioxide and water pollution from land runoff, and there are ways communities can help.

Converting ocean acidification data into insights about the species living in our water.

Microscopic marine plants that form the base of ocean food webs.

Blue crabs are crucial to Mid-Atlantic ecology and economy.

Gorgonian sea fans and bamboo corals create vital deep-sea habitats.

A diverse group of animals vital to fisheries.

Mid-Atlantic finfish are essential to marine ecosystems and economies alike.

Vital food web organisms with varying responses.

SAV, including eelgrass, provide vital coastal habitat.

Highly complex webs of species that mix in space and time.

News & Events

Webinars

OA Policy and mCDR

Ocean acidification action planning is states coordinating efforts to monitor, mitigate, and build resilience against acidification threats.

Marine carbon dioxide removal (mCDR) is a technique being investigated to mitigate climate change.

A wealth of informational resources on estuarine, coastal, and ocean acidification in the Mid-Atlantic.

References on estuarine, coastal, and ocean acidification in the Mid-Atlantic.

Explore our full collection of resources

Explore concise fact sheets and publications for key insights and actionable information.

Access and utilize data resources for in-depth analysis and informed decision-making.

Discover tools and materials designed to support educators in teaching and inspiring students.

Review detailed workshop reports for insights, outcomes, and actionable recommendations.

Visualize key information and data through engaging and easy-to-understand infographics.

Ocean Acidification Policy

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