Student Project Figures Figure 7 A schematic diagram of the ascidian filter-feeding process. Water enters the buccal siphon and is drawn in through the stigmata (Ruppert et al., 2004). The water current is denoted by the blue arrows. The food particles in the water current are represented by the red dots and their journey into the gut is described by the red arrows and lines. The green arrow represents the expulsion of faeces through the anus and out the atrial opening. Scale bar = 0.54 mm. Diagram adapted and redrawn from Ruppert et al., 2004.  Figure 7 Figure 8 Figure 9