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A submersible’s robotic arm collects gold coral in the Hawaiian Islands. Similar specimens have been dated at more than 2,700 years old.
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Collecting Gold Coral from the Deep Sea

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Census researchers discovered this sea cucumber (Enypniastes sp.) in the Gulf of Mexico.
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Transparent Sea Cucumber

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Dr. Robert Ballard with an ROV
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Dr. Robert Ballard

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

Bioluminescence

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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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This species of bamboo coral, discovered in 2004 in the Pacific Northwest, has unusually long and impressive tentacles.
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Newly Discovered Deep-Sea Corals

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Two nurse sharks hover over a baited cage
Lesson Plan

Hydrothermal Vent Food Web

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A submersible explores the deep reefs off of Curacao in the Caribbean.
Overview

DROP: The Deep Reef Observation Project

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: Black corals often resemble bushes or trees. Their living tissue can be one of several colors. It’s the skeleton that is black.
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Black Corals of the Deep

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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.
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X-Ray Image of a Tropical Hatchetfish

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A red deep-sea fish specimen.
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The Whalefish Mystery

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Aegina, a type of jellyfish, swims through the water.
Slideshow

The Surprising Elegance of Midwater Sea Life

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