Some example of flow visualization of the sea by using the Advanced Earth Observing Stellite (ADEOS) "Midori" are presented. These include: (1) North-south flow pattern of the Kuroshio Extension, which was affected by slopes of the Japanese Trench, observed using Ocean Color and Temperture Scanner (ADEOS/OCTS), (2) Detailed structure of upwelling off Peru for non-El Nino event, observed using ADEOS/OCTS, (3) Flow visualization of the coastal current in the Isahaya Bay, Kyushu, before and after closing of the bay mouth, observed using Advanced Visible and Near-Infrared Radiometer (ADEOS/AVNIR), and (4) Flow visualization of longitudinal vortices formed in the wind-wave boundary layer, observed using ADEOS/AVNIR.