Kraken MA

[Shadekeep]

What is the MA of a kraken? This has been asked before here but not definitively answered, at least not that I've found.

There is no MA listed in ITL, but they are described as having slug-like bodies, so presumably have a gastropodal foot that allows for slow movement. I would estimate an MA of 2 or 4 at most.

Are they intended to be completely sessile in their adult form, and that is why there is no MA? Or is it merely an omission? If I can get the official word on this it would be much appreciated. There is a kraken at the center of my next adventure.