#4675 · 🐌 snails, slugs & other molluscs
Margined Ram's-horn
🇳🇱 Gewone schijfhoren ·Planorbis planorbis
📍 Lisse, Nederland
📍 Noordwijk, Zuid-Holland, Netherlands
📍 Noordwijkerhout, Nederland
📍 6579 Kekerdom, Netherlands
📍 Lisse, Zuid-Holland, Netherlands
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Jan Ebr & Ivana Ebrová · CC BY 4.0
- 2. © Aiwok · CC BY-SA 4.0
- 3. © mgreilhuber · CC BY-NC 4.0
- 4. © mgreilhuber · CC BY-NC 4.0
- 5. © mgreilhuber · CC BY-NC 4.0
- 6. Lisse, Nederland:© Michel Langeveld · CC BY 4.0
- 7. Noordwijk, Zuid-Holland, Netherlands:© Michel Langeveld · CC BY 4.0
- 8. Noordwijkerhout, Nederland:© Michel Langeveld · CC BY 4.0
- 9. 6579 Kekerdom, Netherlands:© anasacuta · CC BY 4.0
- 10. Lisse, Zuid-Holland, Netherlands:© Michel Langeveld · CC BY 4.0
what is it?
Planorbis planorbis is a species of air-breathing freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails.
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 21 times in the Netherlands on iNaturalist.
- 1,840 observations worldwide on iNaturalist.
- Scientifically named in 1758 (268 years ago).
fact sheet
- English
- Margined Ram's-horn
- Nederlands
- Gewone schijfhoren
- scientific name
- Planorbis planorbis
- class
- Gastropoda
- family
- Planorbidae
- IUCN Red List
- LC · least concern
- sightings in NL
- 21
- sightings in Europe
- 941
- sightings worldwide
- 1,840
- GBIF records in NL
- 14,312
- weight
- —
- length
- —
- lifespan
- —
- named
- 1758
IUCN in Dutch: niet bedreigd. Blank means the sources don't say.
relatives· Planorbidae
#4598 📷 9Great Ram's-horn
🇳🇱 Posthoornslak
Planorbarius corneus
LC 👀 146 in NL
#4680 📷 10Whirlpool Ram's-horn
🇳🇱 Draaikolkschijfhoren
Anisus vortex
👀 19 in NL
#4690 📷 8Keeled Ram's-horn
🇳🇱 Gekielde schijfhoren
Planorbis carinatus
👀 16 in NL
#4726 📷 10American lake limpet
🇳🇱 Smurfslak
Ferrissia californica
LC 👀 8 in NL
#4824 📷 10Marsh Ramshorn
Planorbella trivolvis
LC 🌍 8.7k seen
Sources: iNaturalist taxon 150988, Wikidata Q820437, GBIF 8298325, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.