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yellow colored coral spawning bubble like spawn in a dark ocean
Video

Signals from the Sea

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A deep sea crab (Rochinia crassa) poses with sea fan (Callogorgia spp.) and coral (Lophelia pertusa) on large carbonate boulder.
Photo

Deep-sea Coral In the Gulf of Mexico

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Orange and red deep-sea corals.
Article

Deep-Sea Corals: NOAA Education Plans & Activities

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The Smithsonian Community Crochet Reef
Photo

The Smithsonian Community Reef

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Photograph of a many-armed sea star with maroon and white feathery-looking arms, with a deep red sea fan in the background.
Photo

Feather Star

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A piece of the Hyperbolic Crochet Coral Reef exhibit.
Photo

A Rainbow of Crocheted Corals

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Color illustration of an ancient bivalve.
Slideshow

Rudist Reefs

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Nancy Knowlton speaking about the "Future of the Ocean"
Video

The Future of the Ocean

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Two nurse sharks hover over a baited cage
Lesson Plan

Animals of the Fire Ice

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Unlike the green, leafy algae we're used to seeing, coralline algae has a hard crust—which you can see here at the molecular level under a scanning electron microscope.
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Coralline Algae Under the Microscope

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