I want to show you a video on ocean biologist Alexander Wilcox. This video is not from me.
This shows a fascinating interaction with reef sharks in the Bahamas. With a certain trick Wilcox can put the sharks into a kind of trance. These sharks are motionless because he touches them on their sensors. Afterwards Wilcox can even carry the shark shown in the video to the cameraman.
So if you are surrounded by sharks, you might try to stroke them:)
Of course, this should not be done.