Ocean
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Great white shark moves back to northeast
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A 3,500-pound great white shark named Mary Lee headed north after spending weeks off the Southeast coast.
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A neon-blue, bioluminescent ocean glows at night in San Diego
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A type of "red tide" algae is turning California waters a weird shade of blue that glows in the dark.
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WATCH: Blacktip reef sharks hunt fish in the Maldives
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You might not want to go to the beach after watching this mesmerizing video of predators doing their best.
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East Coast teems with life in model of ocean-floor biomass (MAP)
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See the estimated weight of all carbon-based life in the ocean, from bacteria to tiny meiofauna that live between grains of sand to flounder and whales.
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