Huh? There's another place between the blobs and the prince? How do you get in there without beast or spirit form? It's pretty fast now getting past the blobs; they die really fast now, but I still can't defeat the prince monster; can't get him to make mermen unless I'm there with Li and then I can't bind them. Sorry, you guys are just too subtle with your hints, or I am just too obtuse!
Actually, I find your post very confusing.
The way it is supposed to go:
You enter the Cathedral.
You defeat all 3 mini-bosses, (blobs with big eyes) this unlocks the next area.
you move to the next area, the one with all the powerful currents of water.
you move to the big boss area, where you fight Mithalas. (the big boss of this area)
Alphasoldier mentioned that there is a very small diversion, a second entrance to the area with the water currents, but this leads to a room that is not connected to the rest of the area, the only way to continue is to leave this room the same way you entered and enter the water currents area via the big mouth, after defeating the 3 eye-blobs mini-bosses.
Also, there is a certain place in the cathedral, where Najia mentions that she could explore elsewhere before going back. This is to hint to the player that you can, for example, get nature form first. Though the most canon way to play Aquaria is to get beast form first.
You are not supposed to get Li before beast form, while it is possible via tricks such as penis rocketing, nobody expects new players to be able to pull of such tricks. If you are that advanced, you shouldn't be needing our help.
Spirit form is in the area before you fight the eye-blobs. And you must reach it via the city.
So I'm getting the idea we are not talking about the same thing.