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v0.31:Ocean
| This article is about an older version of DF. |
An ocean is an immense volume of saltwater. They are often bordered by sandy beaches where driftwood can be found. 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.
It is not possible to found a fort solely in an oceanic biome; some land is needed.
There are three varieties of oceans, based on temperature, which affects the sea life found there: Arctic, Temperate and Tropical. Oceans in a freezing climate (usually Arctic oceans) will freeze, just like rivers and pools, acting like a glacier.
Ocean Waves[edit]
Waves will periodically wash over the coast. The tiles will not get wet. However, if it washes over a staircase, the floors below it will be slowly flooded. This may be a good way to irrigate tiles. The wave moves over all natural tiles, and seem to move independently of constructed tiles like walls and floors. Be mindful not to carve away natural walls and allow tide to enter your fort, and cause excess slowdown. Sea walls can be built to block waves and protect beach areas, but need to be completely closed off to be effective. Waves also have a tendency to move items left on the beach, so it is inadvisable to place stockpiles too close to the shore.
Since ocean waves do not actually move the water in the tiles below them, they do not create flow. Thus, waves cannot power a water wheel, making tidal energy generation much more difficult.
Ocean Floor Geology[edit]
The ocean floor will be made up of entire layers, or combinations of the following:
- a Sedimentary layer of conglomerate, limestone, sandstone, or shale
- a Soil layer of calcareous ooze, pelagic clay, or siliceous ooze
- Sand of any variety, often in small patches alongside the sedimentary or soil layers
Most of these layers also support aquifers, which are usually saltwater like the surrounding ocean, making the extraction of these materials rather difficult in fortress mode. Limestone is the one the notable exception, making it ideal for excavation from below since it is also a flux material.
Fauna[edit]
Oceans are an excellent source of food for a new fortress, usually having tons of fish, and containing shell-bearing creatures like oysters and mussels.
In evil oceans sea monsters can be found. Likewise, in good oceans merpersons can be observed.
Arctic Ocean[edit]
Note that, in an Arctic Ocean with a completely freezing climate, none of the Vermin or the underwater Creatures will be present. This pretty much leaves walruses and the three varieties of penguins, since they are able to move about on land.
Creatures
- Blue shark
- Bluefin tuna
- Cod
- Conger eel
- Emperor penguin
- Frill shark
- Halibut
- Little penguin
- Penguin
- Sea lamprey
- Sea serpent
- Sturgeon
- Walrus
- Whale
Vermin
Temperate Ocean[edit]
Creatures
- Angelshark
- Basking shark
- Blue shark
- Bluefin tuna
- Bluefish
- Cod
- Common skate
- Conger eel
- Frill shark
- Great white shark
- Halibut
- Hammerhead shark
- Longfin mako shark
- Marlin
- Nurse shark
- Ocean sunfish
- Opah
- Sea serpent
- Sea lamprey
- Shortfin mako shark
- Spiny dogfish
- Spotted wobbegong
- Sturgeon
- Swordfish
- Whale
Vermin
- Anchovy
- Bat ray
- Brook lamprey
- Flounder
- Hagfish
- Hake
- Herring
- Mackerel
- Mussel
- Oyster
- Salmon
- Sea nettle jellyfish
- Seahorse
- Shad
- Sole
- Spotted ratfish
- Steelhead trout
- Thornback ray
Tropical Ocean[edit]
Creatures
- Angelshark
- Blacktip reef shark
- Blue shark
- Bluefin tuna
- Bluefish
- Bull shark
- Coelacanth
- Common skate
- Frill shark
- Great barracuda
- Great white shark
- Giant grouper
- Hammerhead shark
- Longfin mako shark
- Manta ray
- Marlin
- Milkfish
- Ocean sunfish
- Opah
- Sea lamprey
- Sea serpent
- Shortfin mako shark
- Spiny dogfish
- Spotted wobbegong
- Stingray
- Swordfish
- Tiger shark
- Whale
- Whale shark
- Whitetip reef shark
Vermin
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