Habitat: On Thalassia sp. Distribution: Belize, Bermuda, Jamaica, Puerto Rico, Netherlands Antilles, and it is widely distributed in the Indo-Pacific region. Characteristics: Zooid 2.0-2.5 mm long. The body musculature is comprised by two boundles of transverse fibers, which are perpendiculars to the dorsal margin of the body and towards to the ventral margin. There are 5 rows of stigmata in the pharynx and 15-20 stigmata per row.