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40d:Ocean
An ocean is an immense volume of saltwater. There are generally two or three oceans on every generated map. They come in three varieties, based on temperature, which effects the sea life found there: Arctic, Temperate and Tropical. It is not possible to found a fort solely in an oceanic biome, some land is needed.
Geography
Oceans tend to have a heavy effect on the surrounding geography of the generated world. Volcanoes can often be found around the perimeter of the ocean, and this tends to be easiest place to find them. Marshes and swamps also tend to form around oceanic coastlines, especially near rivers. The land surrounding oceans also tends to have a high water table, resulting in aquifers close to the surface.
Life next to an ocean
Despite the warnings that the fortress selection screen displays, oceanside locations can be quite habitable - provided they are chosen well.
Oceans have a multitude of benefits: they're generally sparsely populated, they usually have an abundance of arable soil, and the nearby aquifer may provide an accessible source of freshwater. Ocean fish are usually abundant and a good source of food, though some sea creatures can be dangerous, particularly in evil areas. Some oceans have sand beaches, a good resource for glassmaking. Oceans also provide a few unique geographic features, including stacks of driftwood and ocean waves - which crash against the beach to produce mist. The erosion caused by waves also tends to leave numerous exposed mineral veins and gem deposits at sea level, and some minerals like platinum form deposits in alluvial areas.
Despite these benefits, oceanic shorelines provide some challenges, and can be difficult starting areas. It is important to check for some variation in topography when choosing an ocean location, as the ground is almost always water-laden one tile down from sea-level. Even if slightly hilly terrain is found, there is no guarantee that stone will still be accessible. Forests tend to make good biome additions, as they tend to have more varied terrain than marshes and swamps. When picking a forest it is important that the treeline extends at least two tiles away from the shoreline on the Local Map, otherwise you may potentially only have stacks of useless driftwood and no actual trees and shrubs.
Worlds | |
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Badlands · Desert · Flatland · Forest · Glacier · Lake · Marsh · Mountain · Murky pool · Ocean · River · Rocky wasteland · Sand desert · Swamp · Tundra |