Student Project Figures Figure 7 Diagram showing the pneumatophore (float) in P. physalis and two of its polyp types (dactylozooids and gastrozooids). Pneumatophores are lined with muscle cells that allow P. physalis to modify the shape and size of the float to change the direction of drift (Page 281 from Brusca, Moore and Shuster, 2016). Figure 7 Figure 8 Figure 9 Figure 10 Figure 11