Where are you going to "get rid of it?"
Certainly don't count on an aquarium. Where I worked we had dozens...and what the heck to do with them all!?!?!?
A 3 foot shark (and BTW, they grow FAST) will need a big tank, and there are not a lot of people with tanks large enough and suitable. Large FO tanks often have incompatible fish (such as triggers or large angels).