Voidweave births a fragment into the deep ocean, where pressure and darkness force an entirely different mode of expansion. The hive learns to communicate through bioluminescent patterns and harmonic frequencies that warp water currents. It encounters a deep-sea research station whose crew has gone silent—not dead, but slowly becoming symbiotes, their lungs adapting to breathe the viscous, latex-thick water. A marine biologist, the last fully human survivor, negotiates with Voidweave from inside a reinforced submersible. The hive offers to transform the entire seafloor into a breathing, thinking reef that could filter microplastics and heal acidification. In exchange, the biologist must teach the hive about loneliness—a concept it cannot grasp in the crushing, connected dark. The story follows the gradual, eerie beauty of an underwater assimilation where each coral polyp pulses with hypnotic luminescence, and the crew's final transmissions become lullabies played across the abyssal plain.