Scientists have created a tiny 3D-printed diving suit that allows swarms of remote-controlled cockroaches to walk underwater for as long as three hours without harm. The cyborg insects, described today in New Scientist, mark a leap forward in bio-hybrid robotics. Unlike previous efforts, these roaches survive repeated submersion and retain full mobility.
The technology could transform search-and-rescue operations in flooded areas, where conventional robots struggle. Researchers envision sending the swimming roach swarms into collapsed buildings or submerged tunnels inaccessible to humans. The approach leverages the insect's natural agility while adding waterproofing.
Each cockroach wears a custom-fitted exoskeleton printed from polyurethane, sealing its breathing holes. A small backpack houses control electronics that are also watertight. In tests, the modified roaches walked at normal speed on underwater surfaces, steering via electrical pulses to their antennae.
The team now aims to extend survival time beyond three hours and add sensors for gas detection or cameras. A key challenge remains communication: radio signals attenuate quickly underwater, though short-range acoustic links are being explored. Some experts question whether swarms can coordinate without direct human piloting.
If scaled, these cyborg insects could one day explore Martian aquifers or aid in underwater archaeology. The work represents a striking merger of biology and 3D printing, though ethical concerns about animal-robot hybrids persist.