This is a neat Walking Under Water Optical Illusion, its been a fantasy of most people to be able to walk under water and be able to hang out with the fish and the dolphins. The people in the pictures below dont have weights on there feet and hidden scuba tanks
This Under Water illusion was created by having a large sheet of glass with a few feet of water on top of it, from the surface it looks like its a pool full of water. On the under side there is a tunnel leading to the dry open area for people to freely wonder with out risk of drowning! Its a neat effect no matter what side of the water you are on.