Elvin, D.; Carlton, J.; Geller, J.; Chapman , J.; Miller, J. (2018). Porifera (Sponges) from Japanese Tsunami Marine Debris arriving in the Hawaiian Islands and on the Pacific coast of North America. Aquatic Invasions. 13(1): 31-41. available online athttp://www.aquaticinvasions.net/2018/issue1.html[details]
The species was recently found on Japanese Tsunami Marine Debris (JTMD) that washed ashore in Oregon, Washington. Haliclona xena has long been regarded as non-native in western Europe, yet of unknown provenance (de Weerdt 1986; van Soest et al. 2007, 2012). The appearance in a dock originating from the Port of Misawa (Japan), is the first report of H. xena outside of the Northwest Atlantic Ocean.