This one is available in australia and works well.
gopro.com/en/au/It has its own housing and you can get it for about $200, the quality is good.
It's more of a movie camera than a still although it does take 3 megapixel shots every 5 seconds.
I put a 2 gig card in and it took 56 minutes of constant video.
I have the details for the australian rep but its at work so i'll post it tomorrow.