Asexual reproduction is by binary cell division; one daughter cell typically remains in the parent theca while the other swims away as a zoospore.

Cyst-like structures have been described for a few species, most recently by Tong (1997). The cysts are walled, have an apical papilla, and may have one or two flagellum-like structures at the apex. The cysts appear to be resting stages in asexual reproduction.

Sexual reproduction is unknown.

A more complex asexual life history is known in a choanoflagellate that has a Salpingoeca-like stage; see the Taxonomy and nomenclature page.