"The fox may have been hunting a seagull in strong winds. She was lucky that we came along," the captain of the ship, Vladimir Popov, told the paper.
The animal, who sailors named Alisa, spent 12 days onboard the freighter, posing for cameras and willingly accepting food, especially sweets, from the crew.
However, when the crew tried to lead her off the vessel, the fox hid in a cold-storage room and was later taken to a vet in Vladivostok. The animal will now be placed in a nature reserve.