I suspect this Limpet has been experimenting with a new hairstyle. That green hair must be quite high maintenance, because the waves will surely make a mess of it as the Limpet slips across the rocks on an underwater foraging trip.
![Limpet - The Hall of Einar - photograph (c) David Bailey (not the)](https://www.thehallofeinar.com/wp-content/uploads/2017/12/Limpet-The-Hall-of-Einar-4851-1.jpg)
Each to their own.
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