badwater snail

{{Short description|Species of gastropod}}

{{Use dmy dates|date=September 2020}}

{{Speciesbox

| name = Badwater snail

| species = infima

| genus = Angustassiminea

| authority = (S.S. Berry, 1947)

| status = VU

| status_system = IUCN3.1

| status_ref = {{cite iucn | author = Mollusc Specialist Group| title = Assiminea infirma | volume= 1996| page = e.T2179A9319797 | year = 1996| doi = 10.2305/IUCN.UK.1996.RLTS.T2179A9319797.en }}

| synonyms = Assiminea infima {{small|S. S. Berry, 1947}}

}}

The Badwater snail (Angustassiminea infima) is a species of small salt marsh snail endemic to the Badwater Basin in Death Valley. It is found only at low elevations near spring sources, and only in regions with relatively low precipitation. It is capable of living completely submerged in the spring water.

The species was described in 1947.{{cite journal|last=Berry|first=S. S.|title=A surprising molluscan discovery in Death Valley|journal=Leaflets in Malacology|volume=1|year=1947|pages=5–8}}(2019). WoRMS Mollusca: MolluscaBase (version 2018-12-06). In: Roskov Y., Ower G., Orrell T., Nicolson D., Bailly N., Kirk P.M., Bourgoin T., DeWalt R.E., Decock W., Nieukerken E. van, Zarucchi J., Penev L., eds. (2019). Species 2000 & ITIS Catalogue of Life, 24 December 2018. Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Water level decreases and trampling from hikers threaten the Badwater snail, and as of 2001 the Badwater snail is at only approximately 15% of their natural population distribution. {{Cite journal |last=Sada |first=Donald W. |date=2001 |title=Demography and Habitat Use of the Badwater Snail (Assiminea infima), with observations on its conservation status, Death Valley National Park, California, U.S.A |url=http://link.springer.com/10.1023/A:1014505415871 |journal=Hydrobiologia |volume=466 |issue=1/3 |pages=255–265 |doi=10.1023/A:1014505415871}}