Figure 2. Dorsal midline splines taken from high-speed video of representative, stereotypical terrestrial jumps.

Presented midlines include a a, terrestrial (Andamia tetradactyla), b, amphibious (Praealticus labrovittatus), and c, aquatic (Blenniella gibbifrons) blenny. The head is indicated by the filled circle, and the darkest midline corresponds to initial body position before movement. Lighter solid midlines indicate the body is contact with the ground, whereas the lightest dashed midlines indicate that the body is raised off the ground. Note the large yaw of the aquatic blenny, c, as its body leaves the surface. Dotted arrows indicate tail movement or overall body movement.