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Brackish water, also sometimes termed brack water, is water occurring in a natural environment having more salinity than freshwater, but not as much as seawater. It may result from mixing seawater with fresh water together, as in estuaries, or it may occur in brackish fossil aquifers. The word comes from the Middle Dutch root "brak". Certain human activities can produce brackish water, in particular civil engineering projects such as dikes and the flooding of coastal marshland to produce brackish water pools for freshwater prawn farming. Brackish water is also the primary waste product of the salinity gradient power process. Because brackish water is hostile to the growth of most terrestrial plant species, without appropriate management it is damaging to the environment.
Caspia is a genus of marine snails, brackish water snails and freshwater snails with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. Caspia is the type genus of the Caspiidae, that is a synonym of Pyrgulinae.
Odontesthes gracilis is a species of fish in the family Atherinidae. It is endemic to the Juan Fernandez Islands off Chile. It occurs around the mouths of caves, in inlets and around piers. This is a species which can be found in freshwater, brackish and marine waters. This species was described as Chirostoma gracile in 1898 by Franz Steindachner with the type locality given as Más a Tierra.
Centropagidae is a family of copepods. Its members are particularly known as plankton in coastal waters and in fresh water in Australia and southern South America. They are also found on subantarctic islands and in lakes in Antarctica.
Compsodrillia is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae, the turrids and allies.
Prototyphis is a genus of sea snails, marine gastropod mollusks in the family Muricidae, the murex snails or rock snails.
Vermicularia is a genus of sea snails, marine gastropod mollusks in the family Turritellidae.
Purpuradusta gracilis is a species of sea snail, a cowry, a marine gastropod mollusk in the family Cypraeidae, the cowries.
Palmadusta is a genus of sea snails, marine gastropod mollusks in the family Cypraeidae, the cowries.
Egilina is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Chrysallida subtantilla is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. The species is one of a number within the genus Chrysallida.
Egilina kotoeae is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Iolaea dubia is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Liostomia beringensis is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Liostomia minutissima is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Odostomia fuijitanii is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
The slender mudskipper is a species of mudskippers native to marine and brackish waters of the eastern Indian Ocean and the western Pacific Ocean where it is an inhabitant of the intertidal zone, capable of spending time out of water. This species can reach a length of 4.5 centimetres (1.8 in) SL.
Phasianema phycophyllum is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Egilina mariella is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Egilina callista is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. The species is one of twelve known species within the Babella genus of Gastropods.
References
- 1 2 WoRMS (2011). Egilina gracilis. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=576644 on 2011-10-26
- ↑ Kantor Yu.I. & Sysoev A.V. (2006) Marine and brackish water Gastropoda of Russia and adjacent countries: an illustrated catalogue. Moscow: KMK Scientific Press. 372 pp. + 140 pls.