Snake Sisters - 1984 - 5/10
The snake lays sixteen eggs; three extra large ones hatch out as human females.
Life is idyllic on the tiny island until the females begin menstruating.
Then they start seeking another sort of snake.
Nudity throughout, quite a bit of sex, and eating (implied) of animals.
I don’t know the history, so don’t know if this is pure fantasy or based on Filipino folklore.
Definitely a curio, and perhaps more for seekers of such.