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A Pontoh pygmy seahorse
Slideshow

10 Things You Never Knew About Seahorses

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Colorful fishes throng a reef in the Northwestern Hawaiian Islands.
Slideshow

Bizarre and Beautiful Coral Reef Animals

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Researchers adopted the “yabbie pump,” the long silver tool shown here, from Australian fishing gear.
Photo

Collecting Shallow-Water Specimens with the "Yabbie Pump"

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

Hawaii’s Maro Coral Reef

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On Moorea, an island in French Polynesia, researchers are striving to complete a biocode—a DNA catalog of every life form big enough to pick up with tweezers.
Overview

Scientists Catalog Life on the Island of Moorea

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In the X-ray image of this Viper Moray Eel (Enchelynassa canina), note the second set of jaws in the “throat”; these are the gill arches, which are present in all fish.
Photo

X-Ray Image of a Viper Moray Eel

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Two nurse sharks hover over a baited cage
Lesson Plan

Focus on Farmer Fish

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Two nurse sharks hover over a baited cage
Lesson Plan

Fish Feeding

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A pearly razorfish
Photo

Pearly Razorfish

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Two coral trout swim on a reef in Fiji.
Photo

Coral Trout in a Fiji Reef

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A blue parrotfish hides among coral.
Article

Tough Teeth and Parrotfish Poop

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Colorful fishes throng a reef in the Northwestern Hawaiian Islands.
Photo

Reef Fish, French Frigate Shoals

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