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Macroscopic Algae (Ventricaria ventricosa)
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Bubble Algae (Ventricaria ventricosa)

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School of blue rockfish in a kelp bed.
Article

Stinkin' Seaweed Makes Tasty Food for Coastal Animals

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Mangrove Salt Glands
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How Mangroves Deal with Saltwater

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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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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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Many species of pink coralline algae, which cements coral reefs together, cover a reef surface in the Southern Line Islands.
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Pink Coralline Algae

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A bloom of algae from up above
Article

What Exactly Is a Red Tide?

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Seagrasses are flowering plants that can form dense underwater meadows and are an important shallow water habitat.
Article

How Coastal Seagrass Feeds the Deep

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Convict surgeonfish are the roaming sheep of the reef but, instead of noshing on grass, they feed on algae.
Article

Helpful Herbivores

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A hippopotamus-like creature swims underwater
Article

Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows

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Intense volcanic CO2 vents in Ili Ili Bua Bua, Normanby Island, Papua New Guinea.
Slideshow

Will Coral Reefs Survive Acidification?

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