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Tomopteris's bristles produce yellow bioluminescence, a unusual color among midwater animals, nearly all of which make some sort of light.
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Glow Worms

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By pumping enormous test tubes that are 60-feet deep and hold almost 15,000 gallons of water with carbon dioxide to make the water inside more acidic, researchers can study how zooplankton, phytoplankton and other small organisms will adapt in the wild.
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Studying Acidification in the Field

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This tentacle belongs to a blue button. While it has a central “float” with streaming tentacles like typical jellyfish, the blue button is a colony of many small hydroid animals.
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Blue Button Tentacle

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Illustrations of radiolarians from Ernst Haeckel.
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Radiolarians

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The West Norwegian Fjords's two fjords, among the world's longest and deepest, are considered archetypical fjord landscapes and among the most scenically outstanding anywhere.
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West Norwegian Fjords – Geirangerfjord and Nærøyfjord, Norway

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Steller's sea eagles, a threatened species, gather on sea ice at the Shiretoko Peninsula in Japan.
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Shiretoko, Japan

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The Belize Barrier Reef Reserve System consists of the largest barrier reef in the northern hemisphere, offshore atolls, and several hundred sand cays, mangrove forests, coastal lagoons, and estuaries. The system's seven sites illustrate the evolutionary h
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Belize Barrier Reef Reserve System

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The Amazon River carries all the rainwater that lands in the Amazon rainforest, covering some 2.1 million square miles, into the ocean. And with it, it carries vital nutrients like phosphorus, nitrogen and silicon.
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Where the Amazon Meets the Ocean

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Pink crustose algae covers the surface of a rock.
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Encrusting Pink Algae and a Seastar

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Yankee Whalers: An 1856 Currier & Ives print shows whalers harpooning a right whale.
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The “Right” Whale to Hunt

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Hawaiian monk seals are among the wildlife found within the Papahānaumokuākea World Heritage Site.
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Hawaiian Monk Seal

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A graph compares the crustacean biodiversity of coral reefs around the world.
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Coral Reef Biodiversity: A Comparison

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