An island or isle is any piece of sub-continental land that is surrounded by water.
There are two main types of islands in the sea: continental islands and oceanic islands. There are also artificial islands. Very small islands such as emergent land features on atolls can be called islets. A grouping of geographically or geologically related islands is called an archipelago, for instance the Philippines. An island may be described as such despite the presence of an artificial land bridge, for example Singapore and its causeway. Some places may even retain "island" in their names for historical reasons after being connected to a larger landmass by a wide land bridge, such as Coney Island and Coronado Island, though these are strictly tied islands. Conversely, when a piece of land is separated from the mainland by a man-made canal, for example the Peloponnese by the Corinth Canal, it is generally not considered an island. This is an automatic compilation of DW content pertaining to "island".
The Svalbard global seed vault, tucked away on a remote Norwegian island, is designed to protect the world's food supply from a doomsday-like catastrophe. Following reports that melting permafrost had caused flooding at the facility, Living Planet examines how disaster-proof the vault really is.