Revenge of the Creature (a.k.a. Return of the Creature and Return of the Creature from the Black Lagoon) is the first sequel to Creature from the Black Lagoon. Directed by Jack Arnold, the film stars John Agar and Lori Nelson. Having previously survived being riddled with bullets, the Gill-man is captured and sent to the Ocean Harbor Oceanarium in Florida, where he is studied by animal psychologist Professor Clete Ferguson (John Agar) and ichthyology student Helen Dobson (Lori Nelson). This was Clint Eastwood's film debut.