One machine, two surroundings
Flexible wings, adjustable flapping and strong actuation let a research robot move through water and air. A July 2026 study by Raphael Zufferey and colleagues reports swimming, flight and transitions between them. The design investigates how a single wing system can serve both environments. [1]
The surface is its own challenge
The paper’s abstract identifies wing properties and the angle of water exit as important. MIT’s account describes tests in a tank and Lake Geneva: wing size, flapping frequency and tail angle were varied to find workable combinations. Success depends on the combination, not merely adding waterproofing. [1] [2]
A demonstration, with another test ahead
MIT’s July report says testing in choppy water and wind remained future work. Ocean sampling is a proposed use, not a completed service. This is evidence of a locomotion mechanism under the tested conditions, not a guarantee that a robot could reliably return from any sea state. [2]
Go a little deeper
Optional reading · about 1 more minute
Follow the crossing
Hypothetical example: Imagine planning a shoreline survey. Write down three separate questions: can the vehicle reach the sample underwater, leave the water, and return through the air? A pass on the first question cannot substitute for observations of the other two. The transition belongs in the mission plan as a test of its own.
What would make the application convincing?
Our interpretation: A useful next demonstration would connect the movement to a complete measurement task: a specified payload, repeatable route, stated environmental conditions and a verified return. That is the evidence we would seek before describing the concept as a dependable survey tool.
Original sources
Attributed synthesis, not original reporting. Examples labeled hypothetical or illustrative are explanatory. Reviewing a source does not independently validate its findings.
- Zufferey and colleagues: aerial-aquatic locomotion ↗
Science, July 9, 2026. Repository abstract and manuscript metadata reviewed September 21; PDF retrieval failed. No detailed performance or numerical reliability claim.
- MIT: flapping robot swims and flies ↗
July 9, 2026. Full institutional report reviewed September 21; same research team, not independent replication.
