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Horizontal bands of color represent different species of lichen that have adapted to the conditions at different heights above sea level.
Article

Seaside Lichens

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

A Look at Life in the Deep Sea

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An octopus shoots ink in defense as it swims away from a scuba diver.
Photo

Octopus Shoots Ink

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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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This orange boring sponge (Cliona varians) overgrows several coral species at Panama's Smithsonian Tropical Studies Institute.
Article

Ocean Acidification Excites Boring Sponges

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Ari Friedlaender, a research scientist at the Duke University Marine Lab, tags a blue whale.
Article

Acrobatic Blue Whales Do the Twist While Feeding

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The loco (Concholepas concholepas, often called the Chilean abalone, although it isn’t actually an abalone) is found along the entire coast of Chile.
Photo

The Loco of Chile

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A cross-section of a nautilus shell is not only beautiful, it also is a great example of the chambered cephalopod shell. The projections splitting each chamber are the siphuncle tubes that allow gas and liquid to be transferred from chamber to chamber. 
Photo

Chambered Shells

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Stephanocyathus (A.) spiniger, a solitary, deep-water stony coral species, has six long spines that slow it from sinking into soft substrates.
Photo

Solitary Deep-water Corals

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This halimeda crab’s disguise did not fool researchers in Moorea where it was collected.
Photo

Halimeda Crab

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The sea star Odontaster validus and sea urchin Sterechinus neumayeri are often found living in association with one another along the Antarctic coastline, here during the Census of Marine Life.
Overview

Sea Stars, Urchins, and Relatives

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Small red hyperiid.
Slideshow

The Hyper Eyes of Hyperiids: How Some Shrimp-Like Creatures See Light in the Deep Sea

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