Shark Sighting - Oh No or So What?

There was recent shark sighting in the waters off Linda Mar near Pacifica. Signs went up warning beach-goers and news organizations went ga-ga over it. Every time this happens I always ask, "What's the big deal? That is where they live." Where do you expect them to be? And just because some official puts up a sign warning people to stay out or prevents people from swimming in the ocean the shark is going to be there. And it is going to be there long after those warnings and signs are gone. Same holds true for mountain lions spotted in foothills. It was there first. We are the ones who built the house in the mountains to get away from the city and now you are worried about mountain lions?