Amazing pictures show staff at The Institute of Greatly Endangered and Rare Species, or TIGERS, taking a leisurely dip with the 90kg beasts.
The South Carolina wildlife centre has been showing off its new custom-made 450L pool, complete with a glass wall for public viewing.
While an average housecat may despise the thought of a cool dip, tigers are the most adept swimmers of all the big cats and even have webbing between their toes to assist in paddling.
But it's not just for show — the tiger devotees are serious when they say the swimming exercises are an important part of the animals' training.
Female big cat trainers have found a unique way to bond with their tigers — don a bikini and join them for a swimming pool frolic.