#4735 · 🐌 snails, slugs & other molluscs
Gekraagde vlokslak
Aeolidiella alderi
🐌 Snails, slugs & other molluscs 📍 in the Netherlands
📍 Girona, ES-CT, ES
📍 Ponton, Thau, France
📍 Ille-et-Vilaine, Bretagne, France
📍 34110 Frontignan, France
📍 Place Georges Teissier, Île-de-Batz, FR
📍 Falmouth Bay, Falmouth, England, GB
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Antoni López-Arenas i Cama · CC BY-NC 4.0
- 2. © Sylvain Le Bris · CC BY-NC 4.0
- 3. © Chris Isaacs · CC BY-NC 4.0
- 4. © Xavier Rufray · CC BY-NC 4.0
- 5. Girona, ES-CT, ES:© Bernat Espigulé · CC BY-NC 4.0
- 6. Ponton, Thau, France:© Sylvain Le Bris · CC BY-NC 4.0
- 7. Ille-et-Vilaine, Bretagne, France:© Pierre Corbrion · CC BY-NC-SA 4.0
- 8. 34110 Frontignan, France:© Xavier Rufray · CC BY-NC 4.0
- 9. Place Georges Teissier, Île-de-Batz, FR:© Anton Loutte · CC BY-NC 4.0
- 10. Falmouth Bay, Falmouth, England, GB:© ellie-maynard · CC BY-NC 4.0
what is it?
Aeolidiella alderi is a species of sea slug, an aeolid nudibranch in the family Aeolidiidae.
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 6 times in the Netherlands on iNaturalist.
- 660 observations worldwide on iNaturalist.
- Scientifically named by William Pennington Cocks in 1852 (174 years ago).
fact sheet
- Nederlands
- Gekraagde vlokslak
- scientific name
- Aeolidiella alderi
- class
- Gastropoda
- order
- Nudibranchia
- family
- Aeolidiidae
- sightings in NL
- 6
- sightings in Europe
- 598
- sightings worldwide
- 660
- GBIF records in NL
- 106
- weight
- —
- length
- —
- lifespan
- —
- named
- 1852 by William Pennington Cocks
relatives· Aeolidiidae
Sources: iNaturalist taxon 56591, Wikidata Q5052513, GBIF 2291945, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.