As Aaht a form of will shell money referred consisting of the shells mainly by Gien shells and rattling shells produced. The colored edge parts of the bowls, which were ground round and strung on chains, were used. The Aaht were used as currency mainly in the area of the Marshall Islands in the western Pacific.
- Lexicon entry: Aaht. In: Lexicon of Biology. Spektrum Akademischer Verlag, 1999, accessed on August 14, 2014.