Humanoids from the Deep, also known as Monster in Europe and Japan, is a 1980 American science fiction monster movie starring Doug McClure, Ann Turkel, and Vic Morrow. Roger Corman served as the films uncredited executive producer and his company New World Pictures distributed it. Humanoids from the Deep was directed by Barbara Peeters also called Barbara Peters and its musical score was composed by James Horner.
Source: Wikipedia