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GEOMAR scientist Armin Form works at his lab during a long-term experiment on the effects of lower pH, higher temperatures and "food stress" on the cold-water coral Lophelia pertusa.
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Deep-water Corals and Acidification

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The bright, brilliant swirls of blue and green seen from space are a phytoplankton bloom in the Barents Sea.
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Geoengineering Phytoplankton Blooms

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Researchers can study ocean acidification in the lab by rearing organisms (here, Lophelia deep-sea corals) in seawater with variable pH and measuring if they grow, eat, breathe, reproduce, or develop differently.
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Studying Acidification in the Lab

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A close up of a sediment core.
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Sediment Core Close-Up

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A graph showing rising levels of CO2 in the atmosphere over time.
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Ocean Acidification Graph

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Unlike the green, leafy algae we're used to seeing, coralline algae has a hard crust—which you can see here at the molecular level under a scanning electron microscope.
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Coralline Algae Under the Microscope

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A starfish eating a mussel.
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Starfish Feeding on Mussels

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A pile of dissolving sea stars.
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Dead, Diseased Sea Stars

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EPA divers from Atlanta place this instrument in Charleston Harbor in order to monitor currents and better predict sand movement for a harbor deepening project.
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Measuring Underwater Currents

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A vaquita swims at the the water's surface.
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The Vanishing Vaquita

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A close-up image of Johnson's seagrass growing in sand.
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Johnson's Seagrass

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The staghorn coral is listed as Threatened under the U.S. Endangered Species Act. It is one of 22 coral species listed.
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Staghorn Coral

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