I'm sitting on the beach right now in North Carolina and I was thinking how great it would be to have some sort of plugs for the data port and headphone jack. Not just for the beach but as a overall protective measure. I'm currently using cut up ziploc bag under my incase case. Maybe there is something for the iPod that would work.
Yeah, the OtterBox defender or armor series has the iPhone 100% totally covered. The defender is water resistant, and the armor is water proof. So if you go to beaches a lot, the armor is probably your best bet. Though I have to say that the defender is less bulky than the armor case. Either way, they'll both work really well. I live in California and I go to the beach a lot too.
I got mine from Semsons & Co. Inc. at a really good price plus free shipping. You can visit http://semsons.blogspot.com for more information and coupon codes (who doesn't like saving money?) Just scroll down the page cause they're always updating their blog.