At one of the places in India, if you stand on the seashore and watch the sea, you will find that the sea water recedes from the shore line a few kilometres and comes back to the shore, twice a day, and you can actually walk on the sea floor when the water recedes. This unique phenomenon is seen at

Gives the basic definition and pattern of tides — periodic rise and fall of sea level once or twice a day — which is the fundamental mechanism behind any large sea recession at low tide.

A student can combine this with local coastal topography (wide, shallow bays/estuaries) to see where twice-daily low tides could expose large areas.

Lists specific Indian locations (Gulf of Khambat, Gulf of Kutch, estuary of Hugli) identified as suitable for tidal/sea-wave phenomena and energy exploitation, implying large tidal ranges there.

Using a map to locate these gulfs/estuaries and noting their wide, shallow configuration would support suspecting large horizontal tidal recession there.

Names major 'tidal ports' including Kandla (Gulf of Kutch) and Diamond Harbour (Hugli estuary), implying strong tidal influence at these locations.

A student could check these ports' locations on a map and infer that strong tidal action in such estuaries/gulfs can expose seabed at low tide.

States that large tidal waves are known to occur along the west coast of India, indicating the west coast (including Gujarat gulfs) has pronounced tidal behaviour.

Combine this with the geographical fact that the Gulf of Khambat and Gulf of Kutch lie on the west coast to focus attention there for large tidal recession.

Describes wavecut platforms whose upper part is exposed at low tide, providing an example of coastal areas where the seabed becomes exposed during low tide.

A student can infer that where broad, gently sloping platforms or mudflats exist (e.g., in wide estuaries/gulfs), low tide can expose extensive seabed accessible on foot.