The SASSI special issue presents results from the Synoptic Antarctic Shelf-Slope Interactions (SASSI) project, coordinated by iAnZone as a contribution to the International Polar Year. We welcome papers discussing SASSI data, synthesis, historical data comparisons, or using numerical models, theory or other data sets to explain SASSI processes. Although we expect the majority of papers to be climate/iAnZone related, we welcome biological, chemical or multidisciplinary papers on shelf-slope interaction processes on or close to the Antarctic continental shelf or slope. For a reminder of SASSI themes and objectives please see http://sassi.tamu.edu.