Bladderwrack, how bout that?

I've tried out what she would look like if she had hair. I thought hair that looked like seaweed would be more interesting than normal hair. Mermaids with normally hair tend to be a bit la-de-da.
I haven't done a whole head of 'hair' yet as I'm not entirely sure I want her to have any.

I was thinking I could cast the hair- so I can have a few different strands and repeat them to save time. The only problem is I don't know how I would attach the hair to the head....