Island
An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be called an eyot or ait, and a small island off the coast may be called a holm. A grouping of geographically or geologically related islands is called an archipelago, such as the Philippines.
List of islands in the Atlantic Ocean
This is a list of islands in the Atlantic Ocean, the largest of which is Great Britain. Note that the IHO definition of the ocean excludes the seas, gulfs, bays, etc., bordering the ocean itself. Thus, for instance, not all of the islands of the United Kingdom are actually "in" or "bordering on" the Atlantic. For reference, islands in gulfs and seas are included in a separate section. Oceanic islands are formed by seamounts rising from the ocean floor with peaks above the surface of the ocean, and are not parts of continental tectonic plates.
Within the Caribbean Sea:
Within the Gulf of Guinea:
Within the Greenland Sea:
Within the Norwegian Sea: