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Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.
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Corals and Coral Reefs

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Swimmers brave the waters in the shadow of a coal-fired power plant. Coal plants like this one emit CO2 into our atmosphere which is warming the planet and altering the chemistry of the ocean.
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Climate Change

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A sea turtle swimming
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Sea Turtles

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Looking through this iceberg's reflection in the Antarctic water, you can see the iceberg below the surface—some 90% of its total volume.
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The Arctic and The Antarctic

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Two Adélie penguins on Paulet Island, Antarctica
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Penguins

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a deep sea jellyfish
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The Deep Sea

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A Mesozoic Ocean scene
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Ocean Through Time

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a close up of bacteria
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Marine Microbes

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A shell placed in seawater with increased acidity slowly dissolves over 45 days.
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Ocean Acidification

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On average, Arctic sea ice has decreased by four percent per decade since the late 1970s.
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Sea Level Rise

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

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A submersible explores the deep reefs off of Curacao in the Caribbean.
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DROP: The Deep Reef Observation Project

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