#4578 · 🐌 snails, slugs & other molluscs
Sap-sucking Slug
🇳🇱 Groene wierslak ·Elysia viridis
🐌 Snails, slugs & other molluscs 📍 in the Netherlands
📍 Oosterschelde, Zeeuwse meren, 158_13_400, NL
📍 De Osse, Grevelingen, Nederland
📍 Strijenham, Nederland
📍 Zeeuwse meren, 158_13_400, NL
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Nathan Jackson · CC BY-NC 4.0
- 2. © unorthodox_sketch · CC BY-NC 4.0
- 3. © lucane · CC BY-NC 4.0
- 4. © Glenn Biscop · CC BY-NC 4.0
- 5. © Sylvain Le Bris · CC BY-NC 4.0
- 6. © Stefan · CC BY-NC 4.0
- 7. Oosterschelde, Zeeuwse meren, 158_13_400, NL:© Stefan · CC BY-NC 4.0
- 8. De Osse, Grevelingen, Nederland:© Glenn Biscop · CC BY-NC 4.0
- 9. Strijenham, Nederland:© Glenn Biscop · CC BY-NC 4.0
- 10. Zeeuwse meren, 158_13_400, NL:© Marjolein Vereijken · CC BY-NC 4.0
what is it?
Elysia viridis , the sap-sucking slug , is a small-to-medium-sized species of green sea slug, a marine opisthobranch gastropod mollusc in the family Plakobranchidae.
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 324 times in the Netherlands on iNaturalist: the #10 most seen of the snails, slugs & other molluscs in NL.
- 1,886 observations worldwide on iNaturalist.
- Scientifically named by George Montagu in 1804 (222 years ago).
fact sheet
- English
- Sap-sucking Slug
- Nederlands
- Groene wierslak
- scientific name
- Elysia viridis
- class
- Gastropoda
- family
- Plakobranchidae
- sightings in NL
- 324
- sightings in Europe
- 1,794
- sightings worldwide
- 1,886
- GBIF records in NL
- 1,699
- weight
- —
- length
- —
- lifespan
- —
- named
- 1804 by George Montagu
relatives· Plakobranchidae
Sources: iNaturalist taxon 470872, Wikidata Q178260, GBIF 5192088, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.