This Inflatable Robot Whale Ditches Propellers for Fins

In a refreshing break from the usual swarm of ear-splitting, finger-mangling quadcopters, researchers at Keio University have crafted a soft, helium-filled marvel that glides through the air like a serene, airborne whale. Dubbed the “Floating Companion,” this whisper-quiet blimp ditches aggressive propellers in favour of gentle flapping fins, making it safe enough to touch without a mandatory trip to A&E. Designed for indoor companionship and subtle ambient alerts, the project was so well-received it scooped a Best Paper award at the ACM DIS 2026 conference—proving that sometimes the most brilliant robots are the ones that don’t threaten to knock you spark out.