A young male manatee rescued in the Blue Waters of the Homosassa River over the weekend remained in stable condition at Sea World on Wednesday, veterinarian Sam Dover said. The 700-pound animal had been spotted by a local dive shop because he was breathing rapidly and was swollen on one side. Dover said X-rays revealed a large amount of fluid inside the manatee, but the fluid prevented veterinarians from seeing any broken bones. He said the problem likely came from a collision with a boat, although there also might be an intestinal blockage that made the animal sick over a period of time. Meanwhile, Sea World workers are giving the manatee antibiotics and feeding it through a tube. It continues to eat some on its own, Dover said.