#4598 · 🐌 snails, slugs & other molluscs

Great Ram's-horn

🇳🇱 Posthoornslak ·Planorbarius corneus

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

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

what is it?

Planorbarius corneus , common name the great ramshorn , is a relatively large species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails, or planorbids, which all have sinistral or left-coiling shells.

base stats

NL sightings 146iNaturalist, research grade
worldwide 9,015iNaturalist 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).

fun facts

Spotted 146 times in the Netherlands on iNaturalist: the #30 most seen of the snails, slugs & other molluscs in NL.
9,015 observations worldwide on iNaturalist.
Scientifically named in 1758 (268 years ago).