Mach 40,000 you say? :wowee:
so 40,000 times faster than the speed of sound... while deep underwater.
Lets assume these creatures spawned in the abyssal zone (3,000m to 6,000m underwater). At 3,000m underwater, the speed of sound (Mach 1) is approximately 3,400mph.
3,400 x 40,000 =...