I had a strange sighting of a 12' Six Gill Shark while fishing for Cutts on a summer evening years ago. Trolling real slow and tight to shore in a 10 Livi I look up and swimming about 15' away is this huge shark. We both parralled the beach for the amount of time it took me to reel in my Dick Nite. As soon as I shut off the electric and made a pull on the outboard he slowly slipped down into the water and disappeared. Made for an increase in heartrate for sure. I know they arn't aggressive but they sure do get big.