As with other colonial tunicates, the smaller pores are the filter feeder's intake pores; several of them share the larger excurrent pores. The tunicate's tadpole larvae may spend from a few minutes to several hours in the plankton before metamorphosis. Depth 16 m.
Each individual has its own separate incurrent (oral) siphon but the excurrent (buccal) siphon is shared by several adjacent individuals. This closeup shows the arrangement of individuals.