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1 .This is Scientific American 60-Second Science.I'm Cynthia Graber. Got a minute?
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2 .A creature called the Atlantic razor clam had a secret.
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3 .Digging in wet sand should be slow and take lots of effort.
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4 .But the razor clam could burrow a centimeter per second and go half a kilometer using only about a AA battery's worth of energy.
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5 .These talents intrigued M.I.T.researchers, who thought that a robotic version of the clam would have practical uses.
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6 .So they studied how the mollusk moves.
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7 .They found that the clam first contracts its shell.
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8 .That action causes sand to fall inward towards the animal.
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9 .Further shell contraction draws water into the mix.
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10 .At that point, the watery sand starts to behave as a fluid, think quicksand.
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11 .The drag on the burrowing clam is dramatically reduced and it starts to really move.
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12 .The process requires pinpoint timing of contractions and digging.
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13 .Based on their findings, the researchers built a metal mimic.
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14 .Its two halves contract and expand, and a rod digs through the sand.
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15 .They believe that an energy-efficient Roboclam could anchor an autonomous underwater vehicle, search for mines or lay underwater cables.
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16 .Scientists discuss their efforts in the journal Bioinspiration and Biomimetics.
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17 .Rather than clamming up.
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18 .Thanks for the minute, for Scientific American 60-Second Science. I'm Cynthia Graber.
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