Fish don’t have ear openings. And that’s a pity. My favorite tunes have never sounded better than while swimming with an iPod Shuffle from Underwater Audio. What makes it unique is the Shuffle itself has been waterproofed. It looks and functions just as a standard iPod Shuffle would, except that it’s rated to depths of 200 feet. I didn’t go that deep. But I do know the Shuffle’s portability makes for a hassle-free swimming experience, in part thanks to the Swimbuds waterproof headphones it can be purchased with. They provided a perfect seal and utilized a drag-free cord that kept my focus on my stroke … and my tunes. underwateraudio.com; $165