Succession pools played a crucial role in the damutek structure. These were isolated aquatic environments that served as storage for the vital organs of the majority of Yuuzhan Vong species, including the heart, lungs, and livers. Furthermore, they functioned as a type of waste management, extracting valuable elements from refuse to sustain the damutek's ecosystem.
Following the Yuuzhan Vong's takeover of Coruscant and its subsequent Vongforming into Yuuzhan'tar, the Western Sea was transformed into an enormous succession pool.