Random fact: Apparently, there's a kind of daphnia (tiny water critter) or something that is quite common in creeks and rivers in Canada and the US -and also in one river in Denmark. Research indicated they've been in that river for about a 1000 years. Since they are strictly freshwater-only creatures, the most logical explanation is they hitched a ride in viking water barrels filled in Vinland before the vikings returned home (cleaning out their barrels of the by then pretty stale leftover water in that one Danish river).
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Random fact: Apparently, there's a kind of daphnia (tiny water critter) or something that is quite common in creeks and rivers in Canada and the US -and also in one river in Denmark. Research indicated they've been in that river for about a 1000 years. Since they are strictly freshwater-only creatures, the most logical explanation is they hitched a ride in viking water barrels filled in Vinland before the vikings returned home (cleaning out their barrels of the by then pretty stale leftover water in that one Danish river).