#4624 · 🐌 snails, slugs & other molluscs
Millenium wratslak
Geitodoris planata
🐌 Snails, slugs & other molluscs 📍 in the Netherlands
📍 Zoetersbout
📍 Zeelandbrug, Zierikzee, Netherlands
📍 4311 Bruinisse, Nederland
📍 4311 Bruinisse, Nederland
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Nathan Jackson · CC BY-NC 4.0
- 2. © Stefan · CC BY-NC 4.0
- 3. © Stefan · CC BY-NC 4.0
- 4. © Bernard Picton · CC BY 4.0
- 5. © João Pedro Silva · CC BY-NC 4.0
- 6. © Glenn Biscop · CC BY-NC 4.0
- 7. Zoetersbout:© Adrie Rolloos · CC BY-NC 4.0
- 8. Zeelandbrug, Zierikzee, Netherlands:© Glenn Biscop · CC BY-NC 4.0
- 9. 4311 Bruinisse, Nederland:© Stefan · CC BY-NC 4.0
- 10. 4311 Bruinisse, Nederland:© Stefan · CC BY-NC 4.0
what is it?
Geitodoris planata is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Discodorididae.
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 72 times in the Netherlands on iNaturalist.
- 439 observations worldwide on iNaturalist.
- Scientifically named by Joshua Alder in 1846 (180 years ago).
fact sheet
- Nederlands
- Millenium wratslak
- scientific name
- Geitodoris planata
- class
- Gastropoda
- order
- Nudibranchia
- family
- Discodorididae
- sightings in NL
- 72
- sightings in Europe
- 389
- sightings worldwide
- 439
- GBIF records in NL
- 1,356
- weight
- —
- length
- —
- lifespan
- —
- named
- 1846 by Joshua Alder
relatives· Discodorididae
#4627 📷 10Velvet Dorid
🇳🇱 Satijnslak
Jorunna tomentosa
👀 65 in NL
#4821 📷 9San Diego Dorid
Diaulula sandiegensis
🌍 10.2k seen
#4826 📷 10Red Sponge Dorid
Rostanga pulchra
🌍 8.6k seen
#4831 📷 9Noble Dorid
🇳🇱 Montereina nobilis
Peltodoris nobilis
🌍 8.1k seen
#4791 📷 10Leopard Sea Slug
🇳🇱 Luipaardslak
Peltodoris atromaculata
🌍 2.5k seen
Sources: iNaturalist taxon 489140, Wikidata Q3137237, GBIF 2292467, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.