Thanks for all the suggestions that came in via comment or mail! Very much appreciated!
Now for another mystery scuba movie…
… some evil frogwoman attacks another frogwoman!
(click to enlarge)
And here is the whole scene (and more…):
A good scene, but the question is, to which movie belongs it?
Thanks for any help in advance!
*EDIT: October 10, 2022:*
Here is the movie title:
(Murderous intent in sea current of Hachijojima – A peeped diary of a beautiful female novelist)
Quite an odd title 😆