I'm not one hundred percent sure, but I think the new Casio EX-G1digital camera might be urine-proof as well as waterproof. I didn't check the tank to confirm, but...

Casio Exilim EX-G1 Introduction Article: http://reviews.photographyreview.com...-shock-camera/

More 2010 PMA Tradeshow Coverage: http://reviews.photographyreview.com...pma-tradeshow/