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1 .This is Scientific American 60-Second Science. I'm Dina Fine Maron. Got a minute?
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2 .A population of snails in Ireland shares genetic traits and physical characteristics with another population in the Pyrenees.
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3 .And you hardly ever find such snails elsewhere in Europe.
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4 .So how did they make the hop without leaving any obvious trail?
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5 .Researchers now think that Stone-Age humans carried the creatures by sea some 8,000 years ago.
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6 .The analysis is in the journal PLoS ONE.
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7 .The critters in question are a variety of banded wood snails.
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8 .Birds sometimes move meals long distances,
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9 .but no known migration route covers these two areas
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10 .People are thus the most likely travelers to pick up a snail in the south of France and drop it in Ireland.
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11 .Fossil records suggest snails in the Pyrenees were part of the diet of Mesolithic humans.
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12 .And the river that flanks the Pyrenees is known to have been a trade route to the ocean.
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13 .The researchers conjecture that migrating humans brought them on the voyage to Ireland either accidentally or for an escargot snack.
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14 .A fate that some snails escaped to found the population there today.
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15 .Thanks for the minute, for Scientific American 60-Second Science. I'm Dina Fine Maron.
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