Bald Mermaids?

Bald MermaidLet’s say mermaids are real.  How do they grow hair under water? Wouldn’t the scalp become super wrinkled?  Just makes me wonder how hair could grow out of a pruny scalp and maintain that hair. Wouldn’t it be brittle because of water erosion?

Okay, I just found some evidence that mammals can grow water while living in water. Apparently, dolphins have a ‘do’ of their own, a tiny ‘do’.

Why do I care? If mermaids don’t have hair, then The Little Mermaid is forever changed in my mind.