Psili Ammos was one of the strangest things we visited on Naxos.
It's completely "domestic", with domestic atmosphere (which means - visits from goats, goats all over the places, small houses with olive trees and completely non-tourist appearance).
It had some tree seeds all over it (we thought at first it was a result from goats regularly visiting the beach until we got the point).
It also had strange winds, it was coldish and, as far as I remember, it was too shallow. But anyway, it was a funny experience.