India has entered a new phase in robotics with Avataar, an amphibious drone developed by Bengaluru-based deep-tech startup AquaAirX Autonomous Systems. Designed for both aerial and underwater operations, it is being positioned as a multi-domain surveillance platform with possible uses in defence, maritime security, offshore inspection and search-and-rescue missions. The system has also secured seed funding of Rs 12.5 crore, led by Rainmatter, the investment arm of Zerodha.
What Avataar Is
Avataar is described as an Autonomous Tactical Aerial and Aquatic Reconnaissance vehicle. It combines the functions of a drone and an underwater robotic system. It can fly like a quadcopter and then submerge to operate below the waterline. This makes it suitable for missions where a single platform must monitor both air and sea.
Technology Readiness and Testing
The developers have stated that the platform has reached Technology Readiness Level 6, or TRL 6. This means it has moved beyond laboratory development and has been tested in relevant operational conditions. Such testing indicates that the prototype can withstand real-world factors such as water pressure, currents and corrosive marine conditions.
How It Operates Underwater
Avataar uses sonar-based sensing to navigate in dark or murky water, where optical cameras are less effective. It maps its surroundings by sending sound pulses and reading the echoes. It also uses underwater speed and position tracking to avoid drift. Communication is handled through acoustic signals, which act like underwater data transmission. The system is also designed with safety checks, including a rule that prevents diving when battery levels are too low.
Strategic and Civil Applications
The drone has significance for national security because it can monitor harbours, ports and coastal infrastructure from both above and below the surface. It may help detect underwater threats, inspect hulls, and support maritime domain awareness. Beyond defence, it can be used to inspect offshore energy assets, subsea pipelines and cables. It also has potential in search and rescue operations in complex marine environments.
Last Modified: April 28, 2026