Gill-man returns … again! In the third Black Lagoon film (and the first to be directed by frequent Universal-International assistant director John Sherwood, in his feature debut, rather than Jack Arnold, who helmed the first two films), a deranged doctor decides that our lagoon-loving monster should live on the land — a decision that obvious leads to horror. The only one of the Black Lagoon films not shot in 3-D, this movie is also frequently considered the final film in the original Universal Monsters series.