Shark is tricky, not all breeds are good or eatable. I've had lots, Dad worked for Chicken of the Sea 38 years. Stuff they didn't can, pack or otherwise make into food like Sea Bass, Shark, Calimari, Smelt, Octipus and the like could go home with the employees. Well untill they figured out hoe to powder and dehydrate it. And sell it as cat chow, dog chow, fertilizer and almost anything with the word chow in it.