Fig. 6. Plot showing an ontogenetic change in the maximum rate of mantle
contraction. Each point represents the maximum rate of mantle contraction
during the escape jet for one individual. H, J1, J2 and Y2 refer to the life
history stages of Segawa
(1987) and correspond to
Hatchling, Juvenile 1, Juvenile 2 and Young 2, respectively. See Materials and
methods for more detail on the life history stages of Segawa.