Fig. (3) Increment in the mass of the tunic per day (Δm_r/day) for the specimen without the mechanical stimuli. Δm_r/day was evaluated at Day 1, Day 2–10, and Day 1–10 (mean ± standard deviation (SD)). A, Siphon (n = 22), M1 (n = 27), M2 (n = 15) and Bottom (n = 25); B, Inside (n = 7) and Outside (n = 6). The results of the statistical tests were described in Tables 1 and 2.