Where the fuck I suppose to find these blobs

You have to line up the paint marks that are on the rocks. Go inside the holes on the top side of the rocks and you will see,

These are basically Natlan's Seelies. You can use Elemental Sight next to their "home" and it will give you a little red energy trail that points to where the Monetoo are at. It doesn't lead you the whole way, but it points you in the right direction.