Scylla, developed for the 2025–2026 season, introduces a new cylindrical, flat-profiled architecture that consolidates all electronics into a single main pressure vessel, addressing previous limitations in enclosure complexity, vehicle balance, and precision manipulation.Key design choices include an HDPE main structural sheet for improved buoyancy tuning and manufacturability, six stabilizing leg pieces for ground contact, and a flat thruster layout that reduces horizontal drag by roughly 20% while increasing heave drag for depth stability. Dual downward-facing cameras provide dedicated fields of view for both the dropper and manipulation mechanisms.Overall, Scylla emphasizes precision, enclosure consolidation, and mechanical simplicity as a reliable platform for near-field manipulation tasks.