Mike Nelson travels from his home base of Marineland, California to Silver Springs, Florida. There he trains a pair of Florida Highway Patrolmen in scuba diving so as to ...

Mike Nelson goes after a vicious alligator that escapes from a wild-animal show in Silver Springs, Fla. and takes refuge in the lake in a public park. ...

Mike dives to see how a woman escapes from a locked truck at the bottom of a lake. Watching a near-tragedy underwater, he takes his concerns to Harry Baldwin, the head of ...

Mike hunts down a killer whale that has been terrorizing a local coastal community. ...