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Two nurse sharks hover over a baited cage
Lesson Plan

Caribbean Coral Reef and Climate Case Study

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A bluefin trevally swims in Hawaii’s Maro Coral Reef, part of the Papahānaumokuākea Marine National Monument.
Slideshow

Two Views of Coral Reefs: Thriving and Threatened

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Intense volcanic CO2 vents in Ili Ili Bua Bua, Normanby Island, Papua New Guinea.
Slideshow

Will Coral Reefs Survive Acidification?

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Tiny organisms found on ARMS
Article

From Field to Lab: How Carbon Seeps Provide a Chance to See Future Impacts of Ocean Acidification

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Branching coral in naturally acidic water.
Photo

Fragile Branching Corals in Acidic Water

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But closer to the CO2 seeps, the complex reef has been replaced by a “monoculture” of boulder corals.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

Monoculture of Boulder Corals

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Photo of coral polyp, with a single bleach polyp.
Photo

Corals Threatened by Acid Seas

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Many species of pink coralline algae, which cements coral reefs together, cover a reef surface in the Southern Line Islands.
Article

Coralline Algae: The Unsung Architects of Coral Reefs

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Tiny organisms found on ARMS
Article

Traveling Around the World to Study the Future of the Ocean

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

Sneak Peek: Future of Coral Reefs in an Acidifying Ocean

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

Reef Rescue: Protect Coral Reefs with Your Actions

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This orange boring sponge (Cliona varians) overgrows several coral species at Panama's Smithsonian Tropical Studies Institute.
Article

Ocean Acidification Excites Boring Sponges

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