There isnt really a lot of edible meat.
I found thresher shark to be very tasty. As a teen I was a prep cook in a seafood restaurant and I cut up many threshers in my day.
Not sure if any other shark is really edible.
On a side note, sharks are very cartilinagous (sp?). They have a lot of cartilage, by dint of them not really having a lot of bones. I have crummy discs in my back and take shark cartilage pills every day to help plump up my discs.
Combined with lots of water it works. Alone it does not work.