Late 1970's shocker from producer Roger Corman about fishy monsters from the deep. With a character called Miss Salmon. Even as an impressionable fifteen year old I knew this one was a turkey. Still, the poster got my attention (the monster).
Casiotone M-10 back then was considered more or less a kids toy. Now it one of those semi-revered keyboards searched out for by vintage music gear fans and synth geeks. I had one for a while and recorded a few songs with it in the early 1980s.