Pits have gotten a bad rap, they are such a loyal, loving, sweet breed.
My dad had a malamute that would do this. Didn't give a shit if my mom went in the water, but if my dad went in deeper than his waist, he would storm into the water, swim out to my dad, grab him by his arm and start sternly tugging him back to shore.
My pug/lab mix hates water. She stands on shore to freak out whenever we go in and then barks at us in a scolding manner when we get out.