#4621 · 🐌 snails, slugs & other molluscs

Swollen River-mussel

🇳🇱 Bolle stroommossel ·Unio tumidus

LCleast concern 🐌 Snails, slugs & other molluscs 📍 in the Netherlands

9 photos from iNaturalist (Creative Commons) · credits & licences

1. © Sokolov Yuriy Ivanovich · CC BY-NC 4.0
2. © Pavel Safonov · CC BY-NC 4.0
3. © Ondřej Zicha · CC BY-NC 4.0
4. © Almantas Kulbis · CC BY-NC 4.0
5. © Kutushev Radik · CC BY-NC 4.0
6. © Emma Versteegh · CC BY-SA 4.0
7. © Natalia Matushkina · CC BY-NC 4.0
8. © Олександр Гриб · CC BY-NC 4.0
9. © Jakob Fahr · CC BY-NC 4.0

what is it?

The swollen river mussel , scientific name Unio tumidus , is a species of freshwater mussel, an aquatic bivalve mollusc in the family Unionidae, the river mussels.

base stats

NL sightings 73iNaturalist, research grade
worldwide 2,862iNaturalist observations
threat LCleast concern

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).