I didn't know seaweed wasn't a common food until I moved to the Netherlands and started enquiring about the local seaweed, only to be met with blank looks or people pointing me to the sushi nori at Albert Heijn.
I've been here for years and I still don't understand how such a seafaring nation with such an intimate connection with the coast line could lack a seaweed culture.
Until I saw this article I was starting to think seaweed was unique to rockier island coastlines, but I guess it just comes down to taste/fashion?
After all, you can sail the seven seas as pillage the world of all its spices, but nothing compares to a broodje kaas! Have heard the theory that it's part of Calvinistic protestantism to avoid strong flavours, but then I'd expect to see more seaweed etc in the South.