The Forager credo is usually one of the first ones anybody does, seasonal-based things aside, its quest pool should probably represent the realistic state of progression most people will be at usually when doing it.
Green Kelp requires (according to the wiki) 3500 minimum perc*exp which means you don't start seeing them at all until 60*59 perc/exp. That is a pretty high bar for what is essentially a starter quest.