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Two nurse sharks hover over a baited cage
Lesson Plan

Sea Surface Temperature and Coral Bleaching

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Two nurse sharks hover over a baited cage
Lesson Plan

Corrosion to Corals

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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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These bleached corals in the Gulf of Mexico are the result of increased water temperatures.
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Bleached Corals

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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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A photo of coral visibly affected by disease.
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Diseased Coral

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Convict surgeonfish are the roaming sheep of the reef but, instead of noshing on grass, they feed on algae.
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Helpful Herbivores

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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.
Audio

Coral Reefs: One Species at a Time

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Compare the healthy coral on the left with the bleached coral on the right.
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Bleached Corals, Pacific Ocean

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UV light illuminates growth rings in a cross-section of 44-year-old Primnoa resedaformis coral found about 400 m (1,312 ft) deep off Newfoundland.
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Coral Growth Rings

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In this photo of a shallow coral reef in the Pacific there are three species of forams. Their colors come from the symbiotic algae that live inside the foram shells.
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Shallow Coral Reef Foraminifers

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Purple, pink and green corals growing underwater on a metal fence-like substrate.
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The Coral Gardener

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