#4700 · 🐌 snails, slugs & other molluscs
European Fingernail Clam
🇳🇱 Gewone hoornschaal ·Sphaerium corneum
7 photos from iNaturalist (Creative Commons) · credits & licences
what is it?
Sphaerium corneum , also known as the European fingernailclam , is a very small freshwater clam, an aquatic bivalve mollusk in the family Sphaeriidae, the fingernail clams.
base stats
Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).
fun facts
- Spotted 13 times in the Netherlands on iNaturalist.
- 668 observations worldwide on iNaturalist.
- Scientifically named in 1758 (268 years ago).
fact sheet
- English
- European Fingernail Clam
- Nederlands
- Gewone hoornschaal
- scientific name
- Sphaerium corneum
- class
- Bivalvia
- order
- Sphaeriida
- family
- Sphaeriidae
- IUCN Red List
- LC · least concern
- sightings in NL
- 13
- sightings in Europe
- 262
- sightings worldwide
- 668
- GBIF records in NL
- 10,438
- weight
- —
- length
- —
- lifespan
- —
- named
- 1758
IUCN in Dutch: niet bedreigd. Blank means the sources don't say.
relatives· Sphaeriidae
Sources: iNaturalist taxon 151736, Wikidata Q729107, GBIF 2286709, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.