Dun Sentinel
EN

Dun Sentinel

Assiminea grayana

UnknownLCEULCEULCEULCEU

Photo: iNaturalist: (c) nevermetsnails, some rights reserved (CC BY-NC), uploaded by nevermetsnails

Overview

Assiminea grayana, common name the "dun sentinel", is a species of very small (4–6 mm.) salt marsh snail, a terrestrial (or marine gastropod mollusk in the family Assimineidae.

The Dun Sentinel (Assiminea grayana) is declining primarily due to habitat loss and degradation of its specialized saltmarsh and estuarine environments. Coastal development, pollution, and sea-level rise associated with climate change are reducing the availability of suitable intertidal habitats where this small gastropod can survive.

Threat summary

Habitat

This species lives in habitats that are intermediate between land and saltwater: in estuaries and salt marshes, at, or right above, the high tide level.

MARINE· majorTERRESTRIAL· major

Threatened in Belgium

Calidris ferrugineaVU

Calidris ferruginea

Declining
Anthophore estivaleCR

Anthophore estivale

Anthophora aestivalis

Unknown
Adonis BlueVU

Adonis Blue

Lysandra bellargus

Unknown
agnhodeedderkoppCR

agnhodeedderkopp

Walckenaeria alticeps

Unknown

Frequently asked questions

Why is Dun Sentinel classified as Endangered?
Dun Sentinel is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. The Dun Sentinel (Assiminea grayana) is declining primarily due to habitat loss and degradation of its specialized saltmarsh and estuarine environments. Coastal development, pollution, and sea-level rise associated with climate change are reducing the availability of suitable intertidal habitats where this small gastropod can survive.
Where does Dun Sentinel live?
Dun Sentinel occurs in Belgium, Denmark, France, Germany, Ireland, and Italy (plus 6 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Dun Sentinel?
The main threats to Dun Sentinel are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.