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A small gray fish with two orange stripes, hides in between corals.
Article

Tiny Fishes Fuel Coral Reefs

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A zoomed-in image of the crown-of-thorns sea star.
Photo

Acanthaster planci

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A soft, yellow coral
Photo

Soft Coral

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The mandarinfish lives in western Pacific tropical coral reef ecosystems and lacks the scales that are typically seen on bony fish.
Photo

Mandarinfish Duo

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Tiny sponge spicules.
Photo

Sparkling Sponge Spicules

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It's a pygmy seahorse (Hippocampus bargibanti), found in Indonesia's biodiverse Coral Triangle and one of the smallest seahorse species in the world! They can change colors like a chameleon to blend into their environment. This helps to protect them from p
Photo

Can You Spot the Seahorse?

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A coral head in the Mesoamerican Reef has both bleached and living coral. The white sections are bleached and the brown parts still contain zooxanthellae, the symbiotic algae that provide food to their coral hosts.
Article

Coral Under Pressure: Monitoring Bleaching In Real Time

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The coastline of American Samoa National Marine Sanctuary
Article

The Reefs of American Samoa: A Story of Hope

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a sunken propeller becomes overtaken by a reef with two scuba diver in the background
Article

When Wrecks Become Reefs

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A coral has just spawned. Each of the hundreds of polyps releases a small pink bundle of sperm and eggs.
Article

A Tale of Sex and Stress in the Ocean

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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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A blue parrotfish hides among coral.
Article

Tough Teeth and Parrotfish Poop

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