Man-O-War Jellyfish Zombie

by Rick
(Salisbury, NC, USA)

Zombie Jellyfish Creature?

I remember going to the movies way back in either late 60s or 70s and seeing a movie that had zombies and creatures that looked like man of war jellyfish with one arm. It was probably a B movie since I have never seen it again since.

Do you know what the name of that movie was?

P.S. I believe it was black and white also. Thanks!