The following is an excerpt.
A genetic similarity between snail fossils found in Ireland and the Eastern Pyrenees suggests humans migrated from southern Europe to Ireland 8,000 years ago.
The slimy creatures in Ireland today are almost identical to snails in Southern France and Northern Spain.
Whether an accidental visitor on a ship or brought along as a snack, the boat they were carried on did not appear to stop in Britain. The findings are published in PLOS One.
Read the full story here: Snail genes reveal human migration to Ireland