The image shows the Kanagan Island and coral reefs (in the upper left-hand section of the image), two northward-propagating packets of solitary waves in the Flores Sea, Bali Island, the Lombok Strait, the small Nusa Penida Island at the south end of the strait and an internal wave packet in the Indian Ocean. Internal wave packets propagating both to the north and to the south are due to interaction of strong tidal currents (daily maximum speed reaches nearly 3 m/s) with a sill between Nusa Penida and Lombok islands (see bathymetric map). More than 20 crests with monotonically decreasing wavelength can be delineated in the first packet. The leading crest has reached shallow waters where there are coral reefs and small islands. The width of the packet is about 80 km. The leading crest of the second packet is catching up with a rear of the first packet. Surface manifestations of two phenomena are observed south of the sill: a packet of nonlinear solitary waves and a plume of warmer Pacific waters which intrudes over 25 km into the Indian Ocean (This interpretation is in agreement with the information contained in the temperature and salinity maps shown in the section "Ancillary information to these images").