The Gambia less than wide at its widest point, with a total area of . About (11.5%) of the Gambia's area are covered by water. It is the smallest country on the African mainland. In comparative terms, the Gambia has a total area slightly less than that of the island of Jamaica. Senegal surrounds the Gambia on three sides, with of coastline on the Atlantic Ocean marking its western extremity. The present boundaries were defined in 1889 after an agreement between the United Kingdom and France. During the negotiations between the French and the British in Paris, the French initially gave the
Coastline of Djursland long Grenå Strand (Grenå Beach) This is a wide sandy beach with dunes. Another exception from the stony beaches of the east coast is the lime cliff coastline of Sangstrup and Karlby. Here the vertical lime cliffs reach all the way to the sea with only a short, or no, beach in between. On a daily basis the average difference between high and low tide is less than 30 centimeters in these waters sheltered from the Atlantic tides by the peninsula Jutland protruding up from Germany. But after storms that drive water in and out of the Baltic, the tidal