Yknow the opening bit for The Muppet Movie where you see Kermit sitting on a log and playing a banjo in the middle of a swamp? That was a real swamp. And Jim Henson was operating him in the swamp water. How was this possible? Well, Jim Henson was sealed in a large watertight container under that log, and was only able to breathe(and sing) from a tube that was cleverly disguised in the environment. And he could see what he was doing above water only through a little TV monitor.
This is what true love can do.
I did this with a lotta nasty fumy markers.
Kermit, The Muppet MovieŠJim Henson & Co.