“and hurled him.” This is the same word as “hurled” in Jonah 1:4 (see commentary on Jonah 1:4).
“and the sea stopped its raging.” This was clearly a miracle. The storm did not simply abate over time, but as soon as Jonah was in the water the storm stopped. This was clearly a sign to the sailors of the power and presence of Jonah’s God, Yahweh. The reduplication of the vocabulary in Jonah 1:16 shows the intensity of the sailors thoughts and actions: they feared Yahweh with fear, sacrificed a sacrifice, and vowed vows.