China is building underwater drones that glide like manta rays and coordinate in swarms — a high-tech leap that could change the future of marine robotics forever. Silent, stealthy, and swarm-ready, these bio-inspired bots have already completed deep-sea trials and may soon be used for everything from coastal surveillance to stealth military ops. The ocean just got smarter — and a whole lot more strategic. Dive into the details — #UnderwaterDrones #MantaRayTech #ChinaInnovation #MarineTech #StealthTech #BioRobotics