an electric ray, especially a heavy-bodied Australian ray that lies partly buried on sand flats and estuaries and can give a severe electric shock 澳洲睡电鳐
Family Torpedinidae: many species, in particular Hypnos monopterygium 电鳐科:多种,尤指澳大利亚睡电鳐(拉丁名Hypnos monopterygium)