Sculpting a Mermaid Character with Dynamesh - ZBrush Creature Design: Creating Dynamic Concept Imagery for Film and Games - page 402

4. We are now ready to apply Dynamesh. Open Tool ⇒ Geometry and set the resolution slider to 24. Drag
a masking marquee to apply the Dynamesh ( Figure 7-23 ).
Figure 7-23: Dynamesh used to resurface the head and neck form