Littorina keenae

{{Short description|Species of gastropod}}

{{Use dmy dates|date=February 2021}}

{{Speciesbox

| image = Littorina keenae.jpg

| genus = Littorina

| species = keenae

| authority=Rosewater, 1978

| synonyms_ref=

| synonyms =

• Littorina patula Gould, 1849
• Littorina planaxis Jay, 1839
• Littorina planaxis Philippi, 1847

}}

File:Eroded Periwinkle sea snail turning over.webm

Littorina keenae, the eroded periwinkle, is a species of sea snail in the family Littorinidae, the winkles or periwinkles.{{WRMS species|445651|Littorina keenae Rosewater, 1978|||Reid, David G. (2009). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=445651 on 6 June 2010}}{{cite web |title=Littorina keenae, eroded periwinkle |url=https://www.sealifebase.ca/summary/Littorina-keenae.html |website=sealifebase.ca |accessdate=12 January 2019}}