The Maringa Ocean alludes to the waters of the Arafura sea linked in ceremonial alliance by Dhuwa and Yirritja Yan-nhangu speaking clans. The barramundi (ratjuk) is a symbol of the Yirritja sea (dhulway) and the barracuda (larratjatja) is Dhuwa. Together they provide and care for our turtle and marine resources.
The moieties Dhuwa and Yirritja are two halves of an ideational system that divides the world into two categories fundamentally classifying every aspect of the Yolngu universe. Everything is either one or the other, so that every aspect of the physical and nomenal world, person or animal is Dhuwa or Yirritja, and is essentially/spiritually associated with a particular Dhuwa or a Yirritja clan.