Sculpting a Mermaid Character with Dynamesh - ZBrush Creature Design: Creating Dynamic Concept Imagery for Film and Games - page 420

Next we will use MeshInsert to create a series of vents down the sides of the figure. This adds both visual
interest as well as the impression of a biological function to the flaring membranes at the sides of the body.
I feel these may serve as a method of locomotion where water may be taken in and then expelled, much in a
manner similar to squid locomotion.
1. Turn on X symmetry and add two spheres to the mesh. Using the Move brush, flatten them into disk
shapes. Place them in the armpits of the figure.
2. Draw a transpose line and while holding Ctrl + Click, drag the center circle to create a second pair of
vents below the first pair. Shape these and scale them to follow the contours of the cowl form. Again,
duplicate several instances down the length of the body, as seen in Figure 7-49 . Combine the mesh with
Dynamesh ( Figure 7-50 ).
Figure 7-49: Adding vents to the back fin structure
Figure 7-50: The vents dynameshed into the whole