Robotic Cleaning Dolphins

Engineers at RMIT University in Australia have developed a sneaker-sized robotic device, nicknamed the “Electronic Dolphin,” designed to help clean marine oil spills. The Wi-Fi-controlled robot enables remote, contactless cleanup, reducing the need for human responders to work in hazardous conditions.

The system uses an eco-friendly filter inspired by the microscopic structure of sea urchins. Made from layered carbon and modified barium carbonate, the material forms tiny spine-like structures that trap air, creating a highly water-repellent surface that repels water while quickly absorbing oil.

Installed at the front of the robot, the filter works with a small onboard pump to draw in oil slicks. In testing, the prototype removed oil at about two milliliters per minute with more than 95% purity, while also demonstrating strong saltwater corrosion resistance and reusability.

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