The Gungans produce many of their structures using a secret method that actually "grows" the basic skeletons or shells of buildings or vehicles. This gives Gungan constructions a distinctive organic look, which is then complemented by artistic detail, even on simple vehicles like the sub. Gungan organically generated shells can be combined to make complex constructions, and then modified and fitted with electronic and mechanical components to give them the needed functionality. The organic skeletons are exceptionally strong, though still susceptible to damage by some of the larger sea monsters encountered in deep waters.