Scyphomedusae and Cubomedusae (hereafter, the medusae stage of a polyp/medusa or medusa-only scypho- or cubozoan life cycle) include most of the largest solitary marine invertebrates.
Herein we present the current status of knowledge of the ecology of the scypho- and cubomedusae fauna from the southwestern Atlantic and Subantarctic region, encompassing Uruguayan and Argentine shelves and their adjacent oceanic waters between 32-60[degrees]S, 34-70[degrees]W (Fig.
Thus, 3749 demersal and pelagic trawls at different geographical positions were examined resulting in 726 new records of scypho- and cubomedusae from neritic and oceanic environments (0 to 2500 m depth) gathered between 32-60[degrees]S and 34-70[degrees]W, encompassing an area of ca.
Although the dataset utilized in our study has been useful in improving our knowledge about scypho- and cubomedusa from the region, there is a clear bias given by the spatio-temporal heterogeneous sampling effort and the methodologies utilized.
New records of Scypho- and Cubomedusae presented in this study are represented by circles (n = 726).