I wonder how oceanic life would be able to record information. If we assume that extraterrestrial oceans would have lifeforms similar to corals and barnacles, how would an aquatic civilization prevent written information from getting encrusted with biofouling or keep it from corroding away?
there are so many ways to record things... for example https://en.m.wikipedia.org/wiki/Quipu
maybe the need to keep it clean just makes it more important to a society...
Or selectively breeding barnacles to make longlasting letters/symbols, or 'milking' their glue and put it on something to avoid being overgrown. Imagine an aquatic market for underwater fonts!1!!
