In this third iteration an oceanic pas de deux, a collage of videos on a projection wall show underwater, deep sea machines in the act of maintenance, such as supporting camera structures and replacing parts, or diving in and out of the water as part of their operational modes (Oceans 3.0 data portal).  Nearby, a pair of robotic arms are robotic arms are trained to mimic their activities through a pose estimation workflow re-configured for non-humans and together construct, deform and collaboratively rework a virtual mesh of ocean currents, particle systems of blue swirls that move between them. This colorful interplay – a duet or pas de deux references pioneering animation artist Norman McLaren’s work of the same title where traces of two dancers are computationally generated and articulate the refrains/echoes of their movement. Alluding to the dual valence of ‘performance’ as both choreography and evaluation of a living system, Memory Machines #3: an oceanic pas de deux casts these machines as invisible performers in the act of sustaining the affordances of our visuality/knowledge of the deep sea. Returning them to the visibility on the surface, the robotic arms and video wall offer a revelatory potential within the space of the gallery.