How does the beast form "eat" things, as in the pink blobs in the Sunken City? Also, in the Abyss, I think, there is a purple flower?, crystal?, whatever that blocks entry past it. What is the way to get past it? And I guess I will ask, also in the Abyss, what are the green orbs floating out of the plants in several areas?

Speed boost into things to eat them in beast form. All will be made clear in the Abyss.

The beast form should have been explained shortly after you got it…not everything dies instantly, remember. Not sure which blobs you’re referring to…you mean the scavenger insects? I’m not sure how many bites it takes to eat those—you’d be better off trying to avoid them.