Dyesebel (1978)

Dyesebel (Alma Moreno) is unique among the menfolk for she is the only mermaid born of human parents from the surface world. A mermaid from birth, she is shunned by the superstitious due to her physical form. After her father is killed by an angry, superstitious mob, Dyesebel is taken to the ocean by her mother where she is sent into exile since her chances for survival are greater there than on land. The young girl-mermaid is found by Banak who adopts her and takes her to their kingdom where she is welcomed into their community. Years later, a jealous mermaid named Dyangga makes Dyesebel's life miserable among the denizens of the sea which leads Dyesebel to try returning to the surface world. She meets a kind, handsome young man named Fredo who falls in love with her and protects her, but then she is kidnapped by Fredo's jealous former girlfriend's new boyfriend and displayed at the circus. She is subsequently rescued by Fredo and is brought back to the ocean where she is again told that although Fredo doesn't want to see Dyesebel leave, he'd rather let her go than see her hurt by evil men on the surface world. This time around, Dyesebel returns with a magic conch shell that transforms her into a full human form and returns to Fredo where they marry. Also stars Mat Ranillo III and Gloria Sevilla. (In Tagalog language).