Indeed, if a shark whispered to me to get out of the water, or it'd eat me, I'd listen.
All jokes aside, they are amazingly powerful creatures. Last summer, I had a bad day of fishing where I was trying to hook into big saltwater fish (2-3 feet), but only ever manager to hook into 10 foot long sharks. (Which of course, I was not prepared for, and they wrecked my gear)
(I wasn't hooked into him in this pic, but shortly after. My heart was pounding right after he broke me off!)