Starring one of John Wayne's kids, John Ashley known for such greats as: How to Stuff a Wild Bikini and the little known debut of Grace Armas (the screaming lady from National Lampoon's senior trip) as several of the swimming Atlanteans (No joke, I can give you her business # to verify that, she lives in Canada.)...Oh Sid Haig's in it too I guess. Marvel at terrible cinematic and even worse foam rubber tentacles. Watch an entire civilization struggle to make one woman mate.
https://www.youtube.com/watch?v=glol2EqTWLA
If for no other reason then do it for the eyes!