my itouch fell in the sea and it wont turn on :( what should I do ?

See:

How to fix a wet iPod or iPhone | eHow.comfix-wet-ipod-iphone.html

However, I suspect it is permenently damaged If it works no it will likely fail a some time because the seawater causes corrosion.

Apple will exchange your iPod for a refurbished one for this price. They do not fix yours.

Apple - iPod Repair price      

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