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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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A graph compares the crustacean biodiversity of coral reefs around the world.
Article

Hotspot of Biodiversity

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: Black corals often resemble bushes or trees. Their living tissue can be one of several colors. It’s the skeleton that is black.
Article

Black Corals of the Deep

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Staghorn Coral
Photo

Staghorn Coral in a Hurricane

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Coral scientist Dr. Amy Baco-Taylor observed corals like these on her first submarine dive to a deep-sea coral bed off the coast of Hawaii.
Overview

Deep-sea 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 marine scientist performs a genetic analysis on a sample of deep-sea coral to find out if it is a known or new species.
Photo

Genetic Analysis of Coral

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This piece of pocillopora, or cauliflower coral, would normally have a rigid outer skeleton, but researchers dissolved it to expose the coral’s tissue and take a sample for DNA analysis.
Photo

Cauliflower Coral - Pocillopora

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a woman with short black hair and a long necklace of pearls sits in front of a microscope and holds a small button coral
Article

Joan Murrell Owens and her Button Corals

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Two nurse sharks hover over a baited cage
Lesson Plan

In Hot Water

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An underwater photo of a yellow-mouth moray eel.
Photo

Yellow-mouth Moray Eel in the Red Sea (Eilat, Israel)

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This bubblegum coral has a fanlike shape. It is growing 1,310 m (4,298 ft) deep on the Davidson Seamount.
Photo

Bubblegum Coral

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