What would the fear of seaweed be called?

Ok this might sound weird but I'm PETRIFIED of seaweed!! Even if it touches me I get scared. I once was playing with my friends in the ocean when the tide went down and the seaweed surrounded us, and they literally had to tow me out of the ocean because I was frozen stiff and did not budge. they said that I had gone pale as a ghost. another time I actually PED OUT!!! I guess I really scared them. But its just, part of it is that you can't see whats in the seaweed. Also this sounds even lamer but I'm afraid that its going to wrap around my legs and pull me under. Do you know what this fear is called?