This actually is a colonial filter feeding animal, though the individuals are borne in separate tubes of tunic. The 'filaments' of the light-bulbs form a groove in the wall of the pharynx, the endostyle. Here iodine is extracted from sea water to form a compound akin to thyroxin. Larvae are brooded at the base of each light-bulb.
These colonial tunicates harbor symbiotic, prokaryotic algae which account for the bright green color. The tunicates are accompanied by a species of red tunicate.
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.
This filter-feeding colonial animal is a chordate--it's in the same phylum we are. The tiny apertures are intake pores; several of them share the larger common excurrent pores. The animals are hermaphroditic; they reproduce sexually with typical tunicate tadpole larvae. 12 m deep.