They were swept away by Hurricane Dorian last September on the East Coast.
Incredible but true, they were found alive miles away on a string of sandy islands, local media reported Thursday.
The three cows lived in freedom on private land on a peninsula named Cedar island. Hurricane Dorian caused a "mini-tsunami" that killed some 30 wild horses, some of which were also taken to sea.
But they survived. They swam 6 to 10 kilometers at sea before putting the hoof on their floor, in this case an island of dunes and scattered vegetation belonging to the Outer Banks, said the newspaper Charlotte Observer.
They were recently discovered by agents at the Cape Lookout National Park.
They are likely to be sedated and repatriated by boat to their original pasture, a spokeswoman for the Cape Lookout Federal Park, quoted by the Charlotte Observer, said.