City News Service says the green sea turtle, named Koa, released into the Pacific Ocean on Wednesday.
The turtle was discovered in June off the Oregon coast. It was dehydrated, nearly comatose and was suffering from cold water exposure and injuries to its shell.
It was taken to the Oregon Coast Aquarium. A Navy plane on a training mission later flew the turtle to SeaWorld San Diego for nursing.
Green sea turtles can weigh up to 350 pounds. They're a threatened species in the U.S. and are considered endangered around the world.