Phytoplankton — microscopic ocean plants — produce 50% of the world's oxygen and form the base of the marine food web.
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The sea turtle’s streamlined shell aids in efficient swimming.
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The Panama Canal connects the Atlantic and Pacific Oceans.
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The deep ocean is the largest habitat on Earth.
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Certain marine animals use camouflage to blend into coral reefs.
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The Pacific Ocean covers nearly one-third of Earth's surface.
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A polar bear's sense of smell can detect seals from over a kilometer away.
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In 1970, a whale carcass was blown up with explosives in Oregon to remove it from a beach.
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The Caspian Sea is the world's largest inland body of water and is classified as a lake despite its salt water.
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