Here is one for ya: What is the most musically inclined fish? ...a tuneafish! I had to do the joke because this product made me think of it. The Finis SwiMP3 256MB ($199) is a new MP3 player for underwater use. The SwiMP3 relies on bone conduction of sound and when the device is placed on any bones of the skull (i.e. the cheek bones) it leads to vibration of the fluid in the inner ear. Read more