A tidal island is a piece of land that is connected to the mainland at low tide at which time they can be reached on foot. At high tide however it is completely cut off from the mainland and becomes a real island. Tidal islands are sometimes connected to the mainland by a man-made causeway allowing easy access for visitors wishing to cross over but even these can get submerged by the sea. So always check the tide times before you visit, or get ready to swim back.
# St Michael's Mount, UKSt Michael's Mount is a tidal island located 366 metres (400 yards) off the Mount's Bay coast of Cornwall, United Kingdom. It is a civil parish and is united with the town of Marazion by a man-made causeway of granite setts, passable between mid-tide and low water. The chapel of St Michael, a 15th century building, has an embattled tower, in one angle of which is a small turret, which served for the guidance of ships. Some studies indicate that any rise in ocean waters as well as existing natural erosion would put some of the Cornwall coast at risk, including St. Michael’s Mount.
# Modo, South KoreaModo Island is a small island in Jindo County, South Jeolla province, South Korea, just off the southwest corner of the Korean peninsula. It is located to the south-east of Jindo Island and is about 1.1 km (0.7 mi) long and 300 meters (330 yds) wide. The tide-related sea level variations result in a local phenomenon (a Moses Miracle) when a land pass 2.9 km (1.8 mi) long and 10–40 meters (11-33 yds) wide opens for an hour between Modo and Jindo islands. The event occurs approximately twice a year, around April-June. It had long been celebrated in a local festival called Jindo's Sea Way, but was largely unknown to the world until 1975, when the French ambassador Pierre Randi described the phenomenon in a French newspaper. Nowadays, nearly half a million foreign and local tourists attend the event annually.
# Newquay Island, UKNewquay Island in Cornwall is joined to the mainland by a suspension bridge. Actually a huge 70 foot (21 m) high rocky outcropping, it appears to be an island when the tide is in, but one can walk right up to it when the tide is out. The bridge was built in 1900 and is just wide enough for a person to walk across. Though it wasn't designed with those suffering from acrophobia in mind, it is very safe and is inspected every year.
There's only one house on the tiny island, and it's run as an up-market bed and breakfast establishment. Surrounded by a beautiful garden which itself is surrounded either by the sands of Newquay Beach or by the sea - depending on the time of day.
# Mont Saint-Michel, FranceMont Saint-Michel is a rocky tidal island and a commune in Normandy, France. It is located approximately one kilometre (just over half a mile) off the country's north-western coast, at the mouth of the Couesnon River near Avranches. The population of the island is 44, as of 2009. The island has held strategic fortifications since ancient times, and since the 8th century AD been the seat of the monastery from which it draws its name. The Mont-Saint-Michel and its bay are part of the UNESCO list of World Heritage Sites. More than 3,000,000 people visit it each year.
# Haji Ali Dargah, IndiaThe Haji Ali Dargah is a mosque and dargah (tomb) located on an islet off the coast of Worli in the Southern part of Mumbai. Near the heart of the city proper, the Dargah is one of the most recognisable landmarks of Mumbai. The accessibility to the Dargah is very much dependent on the tides. As, the causeway is not bound by railings, when the causeway gets submerged during the tides high tides it becomes inaccessible. Therefore, the Dargah is accessible only during low tide. This walk on the causeway, with the sea on both sides, is one of the highlights of a trip to the shrine.