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The sculpture is constructed of three column forms fabricated from stainless steel and bronze, that reference the shape of buoys, each column contains multiple fog nozzles, LED light sources, motion sensors, and sound systems.  The sculptural columns are surrounded by a boat-shaped outline of granite seawall blocks, salvaged from landfill containing 18th century piers that were discovered during sub-surface highway construction. The 2000 lb granite seawall blocks are elevated on stainless steel supports that allow the fog to travel under the blocks, and openings between the elevated blocks allow passage into the interior space. Multiple motion sensors on top of the vertical columns register pedestrian activity that is transmitted to a computer processor to control changing sequences of fog, light, and sound.The technology that operates the sculpture is maintained by the non-profit Rose Kennedy Greenway Conservancy.Open all year, the water fog system operates seasonally.