This Ancestor Art is absolutely vital for the existence if the Sea Kinden, let alone their civilisation. It permits the extraction of other substances from within sea water. At its most basic this permits the seven families to breath air without the need for gills, at its most complex intricate and accurate works of art can be produced straight from the imagination of the artist.
The art is also used for the creation of stone chainmail, delicate gold jewelry and a grade of metal called springsteel, which is better than any currently being produced on land. This mostly takes place at Hot Springs.
The word is a portmanteau of accrete and create.