When walking following the river the Deltas becomes the sea. The space that links two agents is the grey area which allows us to perceive the fundamental aspects of the two agents that are defined. The space in-between is an infinite space. Rivers that become Deltas are spaces where the Edge Effect takes form, where creativity and diversity strikes. Transiting borders is walking in the grey area, uncertain and full of potential. Transitory space is a video collage recorded during a walk following the delta and the freedom found in the sea it awaits.