DUNE Case Study - Creature Design | Grothek

Creature Design concept for Dune (Denis Villeneuve).

Grothek are creatures with a rocky exoskeleton which they vibrate to ward off predators and other grothek. Their vibrations cause seismic movements that end up changing the landscape, which they also transform further as they eat minerals in the sand and rocks of Arrakis; their excrement is rich in basalt creating rock formations. Melange cannot be digested by them.