But in that case, DF users shouldn't even be able to drink water, because then they'd be weakened for as long as the water is there (think Luffy's second fight against Crocodile). And besides, humans are supposed (it's a fact) to be comprised of something like 70% water so unless DF users get a whole biological change, your reply is void.
As for the person who asked what would happen if you split a DF in half and 2 ppl ate them, only the very first person to take a bite would get the powers. The other would just eat a very bad tasting fruit. (and it's technically impossible for 2 people to take a bite at the EXACT same time (think nanoseconds if you have to).
As for the 2 DF users having children, although it wasn't explained (not to my knowledge anyway) I don't think the powers transfer to the children. It's just so that the various abilities can be eventually transferred to someone else:
When a DF user dies, there should be a way for that specific power to return to another DF so that someone else, someday, could get that power, but to make sure there can't be more than 1 person at the same time with the same power.
And on a side note, wouldn't someone with the "air" power (ability to control air) be considered too powerful? He would technically be able to fly, so if he's falling in the water, he can just fly away (unless he's unconscious). Plus, the easiest way to kill someone would be to simply create a small bubble of vacuum around someone's head, effectively preventing them from breathing, thus dying from asphyxia. (With greater power, you could kill a whole island or whatever by creating a huge bubble of emptyness

)
And I also have a question: About the zoan type, are they only standard animals or do you think it could be possible to have mythical zoans (dragons, unicorns, etc.) wouldn't that be cool? (this coming from a dedicated dragon-fan ^_^; )
And when will we see a fox zoan-type user?
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