I do sometimes wonder if they should remain protected when a lot of the other fish in the food chain have been just about fished out around metropolitan areas. Not that I want to go and kill them all I just worry that after years of overfishing we have upset the natural balance of nature and with their usual food supply stocks dwindling they may start to look elsewhere.
Hmm an interesting idea, but I really don't think that sharks attack humans because they are starving due to overfishing in metropolitan areas. My general understanding is that sharks like metropolitan areas because there's often run off from rivers (many towns and cities are based around river mouths).
The simple fact is that if sharks were hungry enough to think humans were a viable buffet option, then EVERYONE would be eaten. If they wanted to eat humans they would vaccuum the coastline without sanction. The sharks are there all the time...the reason you've not been eaten yet is NOT because the sharks aren't smart or fast enough. It's because they don't want to. If they did, we'd all all be looking at the world through a set of ribs.
(Also, they don't eat us because they love us! And they're cuddly! Cuddly cuddly sharkies!)
And finally....great whites are wide. Really weirdly wide - I've seen one in real life when diving - maybe 3 meters, and I was astounded by how wide it was. The shark told me it was a trick of the light - the mask adds 20 pounds, and that he was also retaining squalene.