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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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Pink crustose algae covers the surface of a rock.
Photo

Encrusting Pink Algae and a Seastar

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These corals are dead—smothered in sediments and overgrown with algae.
Photo

Dead Coral Overgrown with Algae

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Two nurse sharks hover over a baited cage
Lesson Plan

Coral Conservation

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A graphic explaining coral bleaching
Photo

Coral Bleaching Graphic

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a fuzzy brown sea anemone cover the coral
Photo

Corallimorphs

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A white fleck of plastic is engulfed by a coral polyp.
Photo

Coral Eating Piece of Plastic

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Branching coral in naturally acidic water.
Photo

Fragile Branching Corals in Acidic Water

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On a healthy coral reef, fish (as well as many other organisms) thrive. Not only are reefs beautiful, but they are also critical to ocean health and human livelihoods.
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Healthy Coral Head

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The pink strands of this coral harbor a variety of organisms. Sea whips are gorgonian corals, with flexible skeletons.
Photo

Sea Whip Coral

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Pink crustose algae covers the surface of a rock.
Article

Microbes Help Corals Pick a Home and Settle Down

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Researchers adopted the “yabbie pump,” the long silver tool shown here, from Australian fishing gear.
Photo

Collecting Shallow-Water Specimens with the "Yabbie Pump"

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