Shouldn't I be concerned for Nineveh, that great city, in which are more than one hundred twenty thousand persons who can't discern between their right hand and their left hand; and also much cattle?"
"I am innocent of the blood of this righteous man"  (Matthew 27:24). If the mariners had possessed the same sense of spiritual values as Jonah, they might not have considered him innocent; but according to their light he was innocent, not being guilty of any violence.