Cuddle-Fish Robot
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The Cuddle-Fish Robot is a soft, lighter-than-air flapping-wing floating robot designed for safe, close-proximity human-robot interactions in indoor environments. Inspired by animal movement, it uses a helium-filled soft body and low-frequency flapping wings for propulsion, eliminating risks from propellers, rigid structures, or noise associated with traditional drones. This companion/social robot elicits spontaneous affective behaviors like patting, stroking, hugging, and cheek-touching, fostering positive emotional responses. Key features include touch-safe design, quiet operation, and organic visual presence, making it ideal for therapeutic settings, companionship for isolated individuals, play, and interactive experiences in homes or apartments where conventional flying robots are unsafe.
Quick Overview & Key Facts
Cuddle-Fish Robot is a robot made by EPFL in Switzerland, launched in 2025 and built for social companionship, affective therapy for isolated individuals, and interactive indoor play. Featured in “Cuddle-Fish Robot Elicits Hugs in Therapeutic Indoor Demos”.
- Dimensions
- 50 x 40 x 20 (cm)
- Weight
- 0.2-0.5 kg
- Mobility
- Aerial (flapping-wing floating)
- Battery runtime
- 1–4 hours (Low power consumption due to helium lift)
- Charging time
- 1–2 hours via micro-USB/USB-C
- Sensors
- IMU (Inertial Measurement Unit) for stability, proximity sensors for interaction, and micro-cameras for vision-based tracking
- Operating environment
- Indoor (homes, apartments, therapeutic spaces)
Image Gallery
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Robot Specifications
Values without a Confirmed badge are compiled from public sources and may not be manufacturer-verified.
Not yet published by EPFL: pet safety.
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Frequently Asked Questions
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Q1. What is Cuddle‑Fish Robot, and what problem is it designed to solve?
Cuddle-Fish is a soft flapping-wing floating robot developed by researchers including those at EPFL affiliates. It addresses safety risks of traditional flying robots like quadrotors by enabling touch-safe, close-proximity interactions in indoor environments.
Q2. What are the main capabilities and key features of Cuddle‑Fish Robot?
The robot uses a helium-filled soft body and low-frequency flapping wings for propulsion and lift. It supports controlled movement in indoor spaces with minimal noise and allows safe physical contact, as shown in user interaction studies.
Q3. Who is Cuddle‑Fish Robot built for, and which industries can benefit from it?
It targets researchers in human-robot interaction and designers of companion devices. Potential applications include indoor companionship, play experiences, and therapeutic settings where safe aerial mobility is needed.
Q4. Is Cuddle‑Fish Robot a commercial product or still a research prototype?
Cuddle-Fish remains a research prototype demonstrated in academic studies. According to the developers, it explores concepts for safer floating robots rather than serving as a market-ready device.
Q5. Is Cuddle‑Fish Robot currently available for purchase, and when is it expected to ship?
As of 2026, Cuddle-Fish is not available for purchase. The developers have not announced commercial shipping timelines, focusing instead on research validation.
Q6. How does Cuddle‑Fish Robot actually work in real-world environments?
Helium provides buoyancy while flapping wings enable propulsion and maneuvering in confined indoor areas. User studies observed safe collisions and spontaneous human interactions without injury risks.
Q7. When was Cuddle‑Fish Robot announced or officially launched?
Cuddle-Fish was presented in a 2025 arXiv preprint by its research team. No official commercial launch has occurred, with demonstrations limited to controlled studies.
Q8. How is Cuddle‑Fish Robot different from other robots in the same category?
Unlike propeller-based quadrotors, Cuddle-Fish employs soft materials, helium lift, and bioinspired flapping for quiet, touch-safe operation. This design suits indoor human proximity over high-speed navigation.
Q9. Does Cuddle‑Fish Robot require additional development or customization after purchase?
As a research prototype, it would need significant further development for deployment. Customization for specific uses has not been detailed by the developers.
Q10. What is the future roadmap or planned upgrades for Cuddle‑Fish Robot?
The research team plans to expand movement capabilities and interaction ranges. Further studies aim to validate applications in everyday indoor settings beyond initial prototypes.
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