The parasite infects the gastrointestinal tract and is presumably transmitted by the orofaecal route but the details of this mechanism are presently unknown.
References
^Wakeman KC, Leander BS (2012) Molecular phylogeny of Pacific Archigregarines (Apicomplexa), including descriptions of Veloxidium leptosynaptaen. gen., n. sp., from the sea cucumber Leptosynapta clarki (Echinodermata), and two new species of Selenidium. J Eukaryot Microbiol 59(3):232-45. doi:10.1111/j.1550-7408.2012.00616.x