Whereas the Mon Calamari race chooses to live near the surface, the Quarren are more accustomed to deep-sea living, and choose to live below the water. Their conservative and solitary nature make them unwilling to trust new ideas or lofty concepts. When they first came in contact with the shore-dwelling Mon Calamari who shared their homeworld, the Quarren were hesitant. They eventually began to cooperate with the Mon Cal, and together they developed a symbiotic relationship in which the Quarren provide the raw materials, and the Mon Cal provide the knowledge and expertise. This led to the construction of the huge floating cities that dominate Dac's oceans.