WTOC-TV reports the object discovered during the family's swim Monday turned out to be a Jeep.
Police said they pulled the Jeep from the pond Monday night, and ran the plates.
WSAV-TV reports the 1998 Jeep Grand Cherokee had been reported stolen on Thursday.
Gena Moore of the Savannah-Chatham Metropolitan Police Department said the vehicle will be returned to its owner.
Moore said the Jeep was severely damaged, and she doesn't know how much use it will be after being sunk in the pond.