Tribe:

Chordata

Class:

Ascidiacea

Habitat:

Hard soil, soft soil/sand

Occurrence:

Mediterranean and Atlantic
At depths of 2 to 200 m

Size:

Appearance:

Upright, white, solitary ascidians with many rounded
irregularly arranged cusps
Risk of confusion with Styela plicata, which can be distinguished from Phallusia mammillata by four violet
double lines and numerous folds. Phallusia mammillata by four purple double lines and numerous folds