#4824 · 🐌 snails, slugs & other molluscs

Marsh Ramshorn

Planorbella trivolvis

LCleast concern 🐌 Snails, slugs & other molluscs 📍 outside Europe

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

1. © lefua · CC BY-NC 4.0
2. © L.J. Lamera · CC BY 4.0
3. © Scott King · CC BY-NC 4.0
4. © Jason M Crockwell · CC BY-NC-ND 4.0
5. © Jason M Crockwell · CC BY-NC-ND 4.0
6. © L.J. Lamera · CC BY 4.0
7. Chickopee Memorial State Park, Chickopee, Hampden County, Massachusetts, US:© Jason M Crockwell · CC BY-NC-ND 4.0
8. Pleasanton Ridge Regional Park, Alameda, California, United States:© Robin Gwen Agarwal · CC BY-NC 4.0
9. Shelburne Bay Park, Shelburne, VT, US:© Sinéad Tuttle-Lerner · CC BY 4.0
10. St. George's Parish, Bermuda:© Miguel A Mejias, PhD. · CC BY-NC 4.0

what is it?

Planorbella trivolvis is a species of freshwater air-breathing 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 0iNaturalist, research grade
worldwide 8,716iNaturalist 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

No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
8,716 observations worldwide on iNaturalist.
Scientifically named by Thomas Say in 1817 (209 years ago).