Portal:Islands

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A view of some of the Thousand Islands, photographed in 2015 from atop the 1000 Islands Tower, facing northwest. The Thousand Islands are a North American archipelago of 1,864 islands that straddles the Canada–US border in the St. Lawrence River as it emerges from the northeast corner of Lake Ontario.
A view of some of the Thousand Islands, photographed in 2015 from atop the 1000 Islands Tower, facing northwest. The Thousand Islands are a North American archipelago of 1,864 islands that straddles the Canada–US border in the St. Lawrence River as it emerges from the northeast corner of Lake Ontario.

An island or isle is a piece of subcontinental land completely 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. Sedimentary islands in the Ganges Delta are called chars. A grouping of geographically or geologically related islands, such as the Philippines, is referred to as an archipelago.

There are two main types of islands in the sea: continental islands and oceanic islands. There are also artificial islands (man-made islands).

There are about 900,000 official islands in the world. This number consists of all the officially-reported islands of each country. The total number of islands in the world is unknown. There may be hundreds of thousands of tiny islands that are unknown and uncounted. The number of sea islands in the world is estimated to be more than 200,000. The total area of the world's sea islands is approx. 9,963,000 km2, which is similar to the area of Canada and accounts for roughly 1/15 (or 6.7%) of the total land area of Earth. (Full article...)

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Map showing the location of Hațeg island, with some native pterosaurs

Hațeg Island was a large offshore island in the Tethys Sea which existed during the Late Cretaceous period, probably from the Cenomanian to the Maastrichtian ages. It was situated in an area corresponding to the region around modern-day Hațeg, Hunedoara County, Romania. Maastrichtian fossils of small-sized dinosaurs have been found in the island's rocks. It was formed mainly by tectonic uplift during the early Alpine orogeny, caused by the collision of the African and Eurasian plates towards the end of the Cretaceous. There is no real present-day analog, but overall, the island of Hainan (off the coast of China) is perhaps closest as regards climate, geology and topography, though still not a particularly good match. The vegetation, for example, was of course entirely distinct from today, as was the fauna.

The Hungarian paleontologist Franz Nopcsa theorized that "limited resources" found on the island commonly have an effect of "reducing the size of animals" over the generations, producing a localized form of dwarfism. Nopcsa's theory of insular dwarfism—also known as the island rule—is today widely accepted. (Full article...)

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Tasmanian wine is wine produced in the Australian state of Tasmania. Located at a more southerly latitude than the rest of Australia's wine regions, Tasmania has a cooler climate and the potential to make distinctly different wines than in the rest of the country. The area grows primarily Pinot noir, Chardonnay and Sauvignon blanc, with some smaller plantings of Riesling, Pinot gris and Cabernet Sauvignon. Global warming has had positive effects on the Tasmanian wine industry, allowing most of the grapes in the past few vintages (as of 2005) to ripen fully and produce more vibrant wine. (Full article...)

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