time, showing their extraordinary biting process. The goblin sharks swung their lower jaw
downward and backward to attain a huge gape and then rapidly protruded the jaws forward
a considerable distance. The jaws were projected at a maximum velocity of 3.1 m/s to 8.6–
9.4% of the total length of the shark, which is by far the fastest and greatest jaw protrusion
among sharks. While the jaws were being retracted, the mouth opened and closed again …