What was the old Sci Fi movie with guys with big baloons on their heads?

[fudgepucker]

I saw this movie back in the early 80's all I can remember is some guys with two baloon type things on their heads that I think helped them to run across the ocean. The ocean may not have been water. I think there was also a woman with large breasts.  Can anyone help me with this?

[Andrew]

I would say that this is "The Lost Continent."  

Gerry has a review on Scifilm.org:

Scifilm.org Review

Not to be confused with "Lost Continent" which is about, best we can tell, rock climbing.

[Gerry]

Definitely THE LOST CONTINENT.  Here's a photo of Miss Dana Gillespie and her balloons:

...and thanks for the plug Andrew!  :)

[Shadowphile]

This may be a movie I'm looking for as well.  Are they stuck in some form of predatory sargasso sea?

[Gerry]

Are they stuck in some form of predatory sargasso sea?

Yep, complete with prehensile man-eating seaweed and various other critters.

[Shadowphile]

The prehensile man-eating seaweed was exactly what I was thinking about....

[fudgepucker]

Thanks guys! That looks like the one.

~Fudge P

[peter johnson]

What a fine motion-picture!!  
You have to check it out if you haven't seen it -- a sort of Hammer "Voyage of The Damned", as a cargo of ne'er-do-wells get stuck in the Wide Sargasso Sea, and find that centuries of sailors and explorers have likewise been caught, and have formed their own society -- a theocracy driven by a single mad boy at this point.
Really eerie photography, not bad acting, some odd plot twists, and those incredible sets and costumes!  Plus, it's a Hammer!!!
peter johnson/denny crane

[BoyScoutKevin]

That woman is never going to have to worry about drowning.