Another Fishy tale from the mid 60's. In this one, the quintessential he man type navy dude is needed to track an underwater UFO. Strange things soon happen and between monsters, an annoying ex-subordinate, and the prerequisite bombshell babe; the ocean floor may never be the same. This film has slightly (and I mean slightly) better than average SFX for the time period, but relatively good acting make it a fun movie to watch.