I didn't misread, but Kato summed up basically what I was getting at. Besides, from experience in the water with it strapped to your wrist you actually mid shitloads of what you could see. Put the headband on, use the app to get it aligned with what you see, and then you only have to look in the direction of what you want filmed and hey presto! Also, as I'm sure you're aware if you're in the water much, nothing stays still for long, by the time you've spotted something shiny, looked at your wrist, hit record, pointed cam in general direction, it's gone. This is why I haven't spent too much time recording anything underwater until using a camera like a gopro.

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Air is for pussies.