Sometimes rather than ask why, it's best just to ask why not. Case in point is the iDuck.

The iDuck is a wireless two part transmitter/speaker that beams the tunes from your MP3 player to the waterproof duck-styled speaker for some bath-time crooning.

Simply hook up your MP3 player to the "egg shaped" transmitter via the included cable, says retailer, select your favourite song and hit the play button. The music will then be wirelessly streamed out of the built-in speaker in the duck.

With a range of around 10 metres, the aquatic gadget requires a total of seven AAA batteries and costs £27.95.