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This is Scientific American 60-Second Science. I'm Dina Fine Maron. Got a minute?

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A population of snails in Ireland shares genetic traits and physical characteristics with another population in the Pyrenees.

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And you hardly ever find such snails elsewhere in Europe.

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So how did they make the hop without leaving any obvious trail?

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Researchers now think that Stone-Age humans carried the creatures by sea some 8,000 years ago.

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The analysis is in the journal PLoS ONE.

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The critters in question are a variety of banded wood snails.

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Birds sometimes move meals long distances,

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but no known migration route covers these two areas

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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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Fossil records suggest snails in the Pyrenees were part of the diet of Mesolithic humans.

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And the river that flanks the Pyrenees is known to have been a trade route to the ocean.

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The researchers conjecture that migrating humans brought them on the voyage to Ireland either accidentally or for an escargot snack.

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A fate that some snails escaped to found the population there today.

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Thanks for the minute, for Scientific American 60-Second Science. I'm Dina Fine Maron.

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