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Two nurse sharks hover over a baited cage
Lesson Plan

What is a Coral Reef? Middle School

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Compare the healthy coral on the left with the bleached coral on the right.
Photo

Bleached Corals, Pacific Ocean

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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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corals polyps open and spawning
Article

Corals from the Deep Thrive under Aquarists Care

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Close-up photograph of translucent coral polyps, showing the symbiotic algae living inside.
Slideshow

Zooxanthellae and Coral Bleaching

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A bluefin trevally swims in Hawaii’s Maro Coral Reef, part of the Papahānaumokuākea Marine National Monument.
Slideshow

Two Views of Coral Reefs: Thriving and Threatened

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a man snorkels above a reef while a woman in flippers sits on a boat
Timeline

Sunscreen in the Environment

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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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