Close up image of mussels with small, white barnacles on their shells.

Acidification

A shell placed in seawater with increased acidity slowly dissolves over 45 days.

Ocean Acidification Overview

Are you a student researching ocean acidification or someone looking to learn more about ocean acidification? This overview dives into everything to know.

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Featured Content

Searching for the Ocean Acidification Signal

A pair of sea butterflies float in the Arctic ocean.

Are You An Educator?

At Smithsonian Ocean, we have lesson plans, activities, and resources to help you engage your students in the wonders of our oceans.
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Acidification Articles

Searching for the Ocean Acidification Signal

A pair of sea butterflies float in the Arctic ocean.

Sneak Peek: Future of Coral Reefs in an Acidifying Ocean

Where the pH is the lowest, corals can no longer grow - sand, rubble and seagrasses replace the reef.

Reef Rescue: Protect Coral Reefs with Your Actions

A diver cares for the reef by cleaning up discarded fishing gear and garbage.