Sharks ARE everywhere because we povide a hugh junk-food supply of junk-food for them. If there were no junk-food in the oceans the shark population would be reduced to a managable level where would not have to kill these wonderful animals because of overpoulation.
The only junk food I provide them is double processed, once through my digestive system, once through the local sewage treatment system.
Oh wait, are there sharks in Pyramid Lake?