Scuba Pod

Okay, not really. But this crushproof case from Otterbox is waterproof up to depths of 1 meter. Not only does it keep out the water, but it also keeps out the sand, dust or dirt. The exceptional thing about this case is that you can still control the iPod while it's in there, as well as plug in headphones - all without breaching the waterproof seal.

And if that's not enough, checkout these submersible/waterproof headphones by SwimMan.

Fits 4th generation iPods including the mini.

Read the review at PlayListMag.com.