More than half of the world's coral reefs have been lost since the 1950s due to warming and acidifying oceans.
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A sea horse anchors itself using its tail.
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The Arctic Ocean is the smallest ocean.
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The deepest part of the ocean could submerge Mount Everest.
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The tripod fish can stand on the ocean floor using elongated fin rays.
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The Pacific Ocean is larger than all the Earth's landmasses combined.
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The ocean contains structures larger than mountain ranges.
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More than 70% of Earth's oxygen is produced by marine plants, primarily phytoplankton.
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The Pacific Ocean contains thousands of islands.
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