I'm pretty sure there are scenes of extras fleeing near a dock or something in Quo Vadis so I don't thik all the water's edge scenes in Atlantis are necessasrily original. (By the way, Quo Vadis is a question --- is there a question mark in the title?)

I could swear I've seen the flying men scene somewhere, in a documentary or something. I've searched YouTube to no avail. And as we all know if it isn't on YouTube it doesn't exist.