If you want to take the hook out of a shark correctly, buying either a ARC De-Hooker,
http://dehooker4arc.com/store/

If you want to use pliers, I would suggest buying 16in pliers. Have one person hold the mouth of the shark open and another person take the hook out with the pliers.

Here is a video showing one way to take hooks outs (Warning!, Don’t do it this way unless you are familiar with a sharks movements, this can be very dangerous if not done properly!)
http://youtube.com/watch?v=kuXPInIhmOI

If you have anymore questions, just email me at Blacktip_hunter@hotmail.com