By the way you can't actually kill an anemone (get rid of) in this game. Have fun!
Well, you can, actually,. There are two methods
1) Just bind and drag a big rock behind you, and swing it around to hit the anemone.
2) Use beast form and do bite attacks. (this one is a bit difficult, but not impossible, to pull off without taking damage)
Yeah I think I realized I need fish form to get past it.
Nature form actually.
Li doesn't seem to respond correctly. It said if I want to leave him somewhere that I should interact with him.
Interact with the helm, this can be done at two places:
1) Li's cave.
2) Naija's home. (below the save crystal)
Also, if you want to control Li's attacking behavior, singing his song will toggle attack mode on an off, except when you are separated, then it just teleports him towards you.