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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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A brittle star clings to the branches of a deep sea coral
Article

A Brittle Star May Be a Coral’s Best Friend

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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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Octocorals dominated the seafloor on Chris Mah's Okeanos mission to Johnston Atoll in the remote Pacific Ocean.
Article

Deep-sea octocorals: An ecosystem of their own

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

Bioluminescence

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Two octopuses sitting underwater highlight the different textures the animals can take on.
Overview

Octopuses and Squids

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Close-up photograph of translucent coral polyps, showing the symbiotic algae living inside.
Slideshow

Zooxanthellae and Coral Bleaching

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Jellyfish produce mucus, especially when stressed, which can interact with oil and break it down. This moon jellyfish is sloughing off mucus that has mixed with droplets of oil.
Article

How Jellyfish Break Down Oil After a Spill

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A decomposing sea star loses its grip on a rock.
Article

Sickly Starfish: A Q&A with Dr. Chris Mah

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A reddish-orange nudibranch.
Slideshow

A Collage of Nudibranch Colors

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Chrysaora melanaster is a jellyfish found in the Arctic.
Overview

Jellyfish and Comb Jellies

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