Plankton - the smaller Berkleys do not have the plastic coating on them.
I have never had a fish manage to torque mine open (metal grips) - not for the lack of trying from a number of blues.....
Cabelas has an image (link below) - the 12" is the one I have used in the surf.
As for me - I don't go out without it (hooked onto the strap of the pfd it is totally out of the way but accessible).
Cheers.
http://www.cabelas.com/prod-1/0011558014820a.shtml