Thor

The Midgard serpent's head was almost within striking distance. Thor reached down without glancing away, and his wingers closed around the haft of his hammer. He knew just where the head of the hammer would need to strike to kill the serpent. One more heave on the fishing line and—
Hymir's bait knife flashed, and the line was cut. Jormungundr, the serpent, reared up, high above the boat, then tumbled back into the sea.