ODEN is an autonomous offshore bioremediation station designed to treat small oil leaks and iridescent sheens directly at sea. It is intended for offshore platforms, ports, and high-risk maritime areas where continuous pollution monitoring is required. The system uses naturally occurring hydrocarbon-degrading bacteria to break down oil biologically, without chemicals or secondary waste. By combining automated surveillance, biological treatment, and low-energy operation, ODEN offers a sustainable, scalable alternative to conventional spill response technologies.