This chapter focuses on the connections between sea surfaces, the atmosphere, and outer space. Its upward-oriented perspective to oceanic history traces these connections from early 20th-century visions like the failed idea of floating airports (seadromes), whose horizontal runways were impractical in aquatic conditions, to later orientation changes. Artificial islands served horizontal helicopter take-off and landing, or offshore rocket launches. The chapter argues that these energy-intensive built environments, enabled by the Age of Oil, spatially and sensually marked the emergence of the oceanic Anthropocene. Platform illumination for helicopters operations, rocket launches, and the flares of oil platforms whose radiation is visible from outer space, created massive “light islands” in marine regions, manifesting carbon emissions. Simultaneously, the light island effect turned into a form of placemaking. Light islands became regular offshore destinations and departure points for other vehicles, creating new oceanic equivalents to terrestrial ports, airports, and spaceports. They also indicated the extension of the human habitat to sea surfaces.