The researchers studied the tidal flows in Kyunggi Bay, Korea, to understand how they affect the environment. They found that the tidal channels in the bay have different flow patterns, with one being flood-dominant and the other ebb-dominant. The speed of the currents varies throughout the year, with faster speeds in winter. The study showed that the flow in the bay plays a crucial role in shaping the tidal flats and that the energy in the bottom layers is significantly reduced due to the shallow estuary.