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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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Tiny organisms found on ARMS
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Traveling Around the World to Study the Future of the Ocean

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

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When we use fossil fuels to power our cars, homes, and businesses, we put heat-trapping carbon dioxide into the atmosphere.
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Tracking Ocean Acidification

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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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But closer to the CO2 seeps, the complex reef has been replaced by a “monoculture” of boulder corals.
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Monoculture of Boulder Corals

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The acidic waters from the CO2 seeps can dissolve shells and also make it harder for shells to grow in the first place.
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Dissolving Shell

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For three weeks, the MV Chertan is home-base for the scientific team and will be transformed in a laboratory to study the effect of the CO2 seeps on reefs.
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MV Chertain Lab Boat

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Where the pH is the lowest, corals can no longer grow - sand, rubble and seagrasses replace the reef.
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Lonely Seagrass in Acidic Waters

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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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Ari Daniel Shapiro and Dr.Randi Rotjan of the New England Aquarium, journey to the Phoenix Islands to study coral bleaching.
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Coral Reefs: One Species at a Time

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By pumping enormous test tubes that are 60-feet deep and hold almost 15,000 gallons of water with carbon dioxide to make the water inside more acidic, researchers can study how zooplankton, phytoplankton and other small organisms will adapt in the wild.
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Studying Acidification in the Field

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