Impossible fish tank
This is a fish tank at the Oita Marine Center that has open holes in the side where you can feed the fish. There's a vacuum holding the water in so that it doesn't pour out, but still allows the fish to swim out and be fed or pet. Or molested, if you're really really disgusting and into that sort of thing. And I know you are, pervert.
A few more shots of the fish tank after the jump.