DriSuit Endurance waterproof protective case
The iPhone's camera is pretty good in a pinch -- but unfortunately it's not so good underwater. If you know somebody who is into water sports, they need the DriSuit Endurance waterproof case.
The Endurance gives full access to the touch screen of an iPhone 4/4S while keeping it safe during its adventures underwater. According to the site, it includes an integrated waterproof headphone jack and a fluidic touch screen membrane.
With these features, your more adventurous giftees can shoot video and photos -- up to five meters deep for up to an hour -- and expect great results, without the fogging associated with similar underwater bags and cases.