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"temperature"
![Corals, sponges, and algae are the major components of most coral reef communities as shown in this picture.](/sites/default/files/styles/3_2_small/public/2023-11/1_08-P03-G12_1.jpg.webp?itok=lTjZPM-8)
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Corals and Coral Reefs
Coral reefs are the most diverse of all marine ecosystems. They teem with life,......![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.](/sites/default/files/styles/3_2_small/public/2023-11/IH208271_smokestack_corbis_intro_1.jpg.webp?itok=hGv2yfBV)
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Climate Change
Today, carbon dioxide (CO2) levels in our atmosphere are the highest they've been......![A sea turtle swimming](/sites/default/files/styles/3_2_small/public/2023-11/turtle-863336_1280.jpg.webp?itok=x_vlEyhR)
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Sea Turtles
Often considered the most majestic of the turtle family, the sea turtle is a...![Two Adélie penguins on Paulet Island, Antarctica](/sites/default/files/styles/3_2_small/public/2023-11/PhilColla_AdeliePenguins.jpg.webp?itok=xEpMpFwX)
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Penguins
Tuxedoed birds with endearing personalities, penguins are fascinating to young and......![Looking through this iceberg's reflection in the Antarctic water, you can see the iceberg below the surface—some 90% of its total volume.](/sites/default/files/styles/3_2_small/public/2023-11/iceberg.jpg.webp?itok=ETprs4Vs)
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The Arctic and The Antarctic
Travel to the ends of the earth—literally—and discover the polar ocean basins.......![a deep sea jellyfish](/sites/default/files/styles/3_2_small/public/2023-11/27328633083_ca49ebc11b_o.jpg.webp?itok=HES-upAv)
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The Deep Sea
Below the ocean’s surface is a mysterious world that accounts for over 95 percent......![A Mesozoic Ocean scene](/sites/default/files/styles/3_2_small/public/2023-11/93-2698_AncientSeas_SmallMural.jpg.webp?itok=L-fa3Q6S)
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Ocean Through Time
The ocean may seem like a vast and unchanging landscape, but the reality is that......![a close up of bacteria](/sites/default/files/styles/3_2_small/public/2023-11/295343456965f41ac475ao.jpg.webp?itok=etfCMw0q)
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Marine Microbes
Invisible to the naked eye, there is a teeming world of microbes living in the......![A shell placed in seawater with increased acidity slowly dissolves over 45 days.](/sites/default/files/styles/3_2_small/public/2023-11/PMEL_Feely_dissolving-shells_main_1.jpg.webp?itok=X5Vs7NSf)
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Ocean Acidification
Ocean acidification is sometimes called “climate change’s equally evil twin,”......![On average, Arctic sea ice has decreased by four percent per decade since the late 1970s.](/sites/default/files/styles/3_2_small/public/2023-11/ExtremeIce_IcelandDSC_0052_full_1.jpg.webp?itok=_oOwCQ_s)
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Sea Level Rise
The ocean never stops moving. When you visit the beach, waves roll in and recede......![Seagrasses are flowering plants that can form dense underwater meadows and are an important shallow water habitat.](/sites/default/files/styles/3_2_small/public/2023-11/ChristofferBostrom_Zosteramarina_Finland.jpg.webp?itok=m0-RKki4)
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Seagrass and Seagrass Beds
Seagrasses are found in shallow salty and brackish waters in many parts of the......
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