Where to Find Luxury World Resort, Hotels, Villas and Cruise to Atoll Island Beaches. Hotel, Resorts and Villa Beach Swimwear Vacation

Bahamas Islands Hotel, Resort, Villa.
Luxury Ocean Front Island Villas and Hotels

Islands may be classified as either continental or oceanic. Oceanic islands are those that rise to the surface from the floors of the ocean basins. Continental islands are simply unsubmerged parts of the continental shelf that are entirely surrounded by water. Many of the larger islands of the world are of the continental type. Greenland (840,000 square miles [2,175,000 square km]), the largest island, is composed of the same materials as the adjacent North American continent, from which it is separated by a shallow and narrow sea. Likewise the world's second largest island, New Guinea (309,000 square miles [800,000 square km]), is part of the Australian continental platform and is separated from it only by the very shallow and narrow Torres Strait. A slight warping of the sea bottom in the vicinity of Torres Strait would be sufficient to join New Guinea to Australia; conversely, a slight rise in sea level may submerge a hilly coast and leave the hilltops remaining as small islands just off shore (such are those off the coast near Boston, Mass., and the islands off the Maine coast).

Atoll, ring-shaped coral reef surrounding a lakelike body of water, known as a lagoon. Atolls are found in tropical and subtropical seas, especially in the Pacific and Indian oceans. Believed to form on the flanks of an underwater volcano, an atoll may project above the surface of the water either as a single island or as a chain of islets. Ordinarily the island or islets rise 4 to 6 m (13 to 20 ft) above sea level. Most of the reef lies just below the surface of the water and is often exposed by waves and tides. The lagoon is quite deep, generally 20 to 30 m (60 to 100 ft) and up to 90 m (300 ft) deep. The word atoll comes from the Divehi language, which is spoken in the Maldives, an island nation in the Indian Ocean.

Any area of land smaller than a continent and entirely surrounded by water. Islands may occur in oceans, seas, lakes, or rivers. A group of islands is called an archipelago. Bora Bora to the Caribbean, Tahiti to Hawaii, an online guide to islands of the world.