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Unlike the shallow tropical coral reef at left, the deep-sea Oculina reef at right does not require sunlight.
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Shallow and Deep-Sea Coral Reefs

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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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Dr. J. Murray Roberts photographed these living polyps from the Mingulay Reef Complex off Scotland in aquaria in 2010.
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Lophelia Pertusa Coral Polyps

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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.
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Bubblegum Coral

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Cancer cells treated with discodermolide, a chemical from a sponge found on deep-sea coral reefs.
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Treated Cancer Cells

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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.
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Cauliflower Coral - Pocillopora

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a brittle star clings to a pink coral
Overview

Deep-Sea Corals

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A pearly razorfish
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Pearly Razorfish

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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.
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Deep-Sea Coral Community

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The staghorn coral is listed as Threatened under the U.S. Endangered Species Act. It is one of 22 coral species listed.
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Staghorn Coral

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Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
Overview

Corals and Coral Reefs

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Two nurse sharks hover over a baited cage
Lesson Plan

Introduction to Coral Reefs

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