Canon AW-DC10 All Weather Case For Digital IXUS i & i5 (Waterproof to 3m) £7.00 Delivered @ Amazon/Mount Trader
This is a Waterproof underwater case for the Canon ixus series of digital camara i saw someone using one while in cuba last week.
they paid £99.99 a year ago. also this is genuine Canon Case.
for 7 quid delivered you cant go wrong.