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Two nurse sharks hover over a baited cage
Lesson Plan

Light at the Bottom of the Deep Dark Ocean

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The ultra-black Pacific blackdragon forms a circular shape with its body.
Article

Scientists Find First Ultra-Black Color in Deep-Sea Fishes

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A close up profile of an adult anglerfish female from the Linophryne family collected in the northern region of the Gulf of Mexico. © 2016 DEEPEND/ Dante Fenolio
Article

Meet the Tiny Bacteria That Give Anglerfishes Their Spooky Glow

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Screenshot from video of a red whalefish swimming in the ocean.
Video

Whalefish Swimming in the Ocean

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Photograph of the underside of a gelatinous octopus with a bright yellow bioluminescent ring around her mouth.
Slideshow

Bioluminescent Animals Photo Gallery

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Imagine eating an entire fish bigger than you—bones and all! At only 25 cm long, the black swallower often eats fish much larger than itself with the help of an expanding stomach. Sometimes the meal is so large that there isn’t enough time for digestio
Photo

Black Swallower

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A photo of a squid using bioluminescence to hide in the deep sea.
Overview

Bioluminescence

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Tropical hatchetfish, like the one shown in this X-ray photograph, live in the dark depths of the ocean. Like many other deep-sea fishes, they have large eyes and bioluminescent spots on their bellies.
Photo

X-Ray Image of a Tropical Hatchetfish

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A red deep-sea fish specimen.
Article

The Whalefish Mystery

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This aptly named fish has two long fangs.
Photo

Fangtooth Fish

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A photo of a sea toad specimen.
Article

A Sub and a Sea Toad

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a siphonophore
Video

Encounters with Bioluminescent Creatures

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