1967/32: Maneater of Hydra aka Island of the Doomed 1967

 Watch movie:

https://youtu.be/w0AtKsVmBlo?si=tiBbrVo_KzG2FR09

 https://en.wikipedia.org/wiki/Maneater_of_Hydra

https://stephenmarkrainey.blogspot.com/2014/06/the-maneater-of-hydra.html 

http://www.1000misspenthours.com/reviews/reviewsh-m/islandofthedoomed.htm 

http://decadesofhorror.com/podcast-maneater-hydra-1967-episode-2-decades-horror-classic-era/