Our Lord Jesus Christ is the Creator of all things, including sharks. Before the Fall, sharks were probably "tame," but not now. Though presented by a fictional character, the following explanation of what happened to the U.S.S. Indianapolis during WWII is, in fact, quite true:
https://www.youtube.com/watch?v=9HYxqOqkSsY
There is so little fear of God in the world today. Even the Church rarely fears our Lord Jesus in a way that truly honors Him.