Protei is a fleet of pollution collecting sailing drones which use existing technologies in an innovative, low-cost open-source oil collecting devices that semi-autonomously sails upwind, intercepting oil sheens which are going downwind.

The design of protei is intended to be hurricane-ready, self-righting, inflatable, unbreakable, cheap and easy to manufacture for immediate response.

The machine currently being developed is for collecting spilled oil at sea but other versions may be designed in the future for other purposes, such as Protei for the North Pacific plastic garbage patch, heavy metals in coastal areas or toxic substances in urban waterways.