After exchanging parts of the baby for the brain, the boy and the dolphin are now able to walk, and the boy can talk to the dolphin. Batt says that he's going to use the baby's brain for his research. He's worried that the baby will die if he doesn't take care of it, so he tells the boy to stay away from the baby. He says that if he gets into trouble, he'll have his own security system to protect him. The boy tells him to get off the baby, and he says that's too bad, because he thought he'd be friends with the baby again. But then he realizes that he can't do anything without the baby - he has nothing left to do. He asks the doctor if he can use the brain to extract some information from the body. The doctor says that it's not necessary, because sharks don't really need to eat people to survive - they just want to taste the blood.