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1 .This is Scientific American 60-Second Earth. I'm David Biello. Your minute begins now.
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2 .You know what's becoming more common than fish in the sea?
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3 .Plastic bags.
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4 .Researchers at the Monterey Bay Aquarium Research Institute surveyed underwater video footage.
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5 .They saw that plastic bags have become ubiquitous on the seafloor off the U.S.West Coast, even as far away as Hawaii.
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6 .The institute's robot subs collected the videos over the last 22 years, mostly in and around Monterey Bay but also further afield.
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7 .Technicians noted whenever it showed objects or animals.
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8 .The footage spanned shallow seafloors of 25 meters or so and areas nearly 4,000 meters deep.
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9 .And in all too much of Monterey Bay, they found trash.
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10 .A full third of the trash was various types of plastic.
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11 .The second most common object: metal cans.
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12 .The rest of the trash was a mix of lost fishing equipment and rope, glass bottles, paper, cloth, even tires.
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13 .The trash preferentially accumulates on steep, rocky slopes, perhaps because ocean currents drop it there.
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14 .And all that garbage is going to stick around.
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15 .The microbes that could otherwise break down plastic bags or metal cans do not thrive in these deep, cold, dark waters.
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16 .So remember, we may throw things away, but that doesn't mean that they go away.
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17 .Your minute is up, for Scientific American 60-Second Earth. I'm David Biello.
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