Serious undersea intelligence, resolving your biggest uncertainties.

Meet SUNFISH, a user friendly and person-portable Autonomous Underwater Vehicle (AUV) with field proven Artificial Intelligence (AI) and Simultaneous Localization and Mapping (SLAM).


Built for extraterrestrial ocean exploration.

SUNFISH was developed by Stone Aerospace in collaboration with NASA for future exploratory mission to the Jovian moon, Europa. The AUV was designed to explore an ocean hidden beneath more than 15 km of ice and autonomously gather data from the alien planet.

Small, Light, Smart

Pushing the boundaries of exploration and technology.

SUNFISH addresses many challenges of autonomous exploration in complex environments. The AUV is designed to operate in a wide variety of undersea environments, ranging from man-made (e.g. piers or harbors) to natural (e.g. reefs or caves).


  • 6-DOF (six degree-of-freedom) maneuverability
  • Autonomous Mission Planner
  • Realtime mapping and localization
  • Multi-beam Sonar Mapping
  • High Resolution Imaging
  • 2-person Portable
  • 50 kg dry weight
  • 161 cm L × 47 cm W × 20 cm H

Ready to Work

SUNFISH AUV can do so much more than explore.


  • Obstacle Avoidance
  • Optional fiber-optic tether for supervised autonomy
  • Fully autonomous with optimal joystick control
  • Autonomous Rendezvous and Docking


  • Pier/Dam/Harbor Inspection
  • Ship hull inspection
  • Autonomous cave exploration
  • Tunnel mapping
  • Autonomous precision instrument deployment
  • Underwater Imaging of critical infrastructure and habitat
  • Offshore Inspection and Survey

Featured Mission

Peacock Springs: Putting SUNFISH to the test.

In October 2017 we ran a series of tests and demonstrations in the unstructured labyrinthine cave environment of Peacock Springs. SUNFISH was able to autonomously explore this environment, creating a real-time map which it used to navigate through the cave. SUNFISH penetrated 120 m into the Peacock 1 cave site, reaching a second cave entrance called “Pothole Sink.” The robot was then able to autonomously find its way back to the starting point using the map it had just created.

Mapping intricate locations autonomously.

This labyrinth of flooded cave passages is where divers receive their first cave diving training. What better place to test SUNFISH as a cave diver? Check out SUNFISH’s interactive multipoint cloud map of Peacock Springs.

Explore in 3D