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#4856 · 🪼 jellyfish, starfish, worms & co

Weduweroos

Sagartia undata

🪼 Jellyfish, starfish, worms & co 📍 in the Netherlands
10 photos from iNaturalist (Creative Commons) · credits & licences
  1. 1. © Ron Ates · CC BY-NC 4.0
  2. 2. © Stefan · CC BY-NC 4.0
  3. 3. © Rita Jansen · CC BY-NC-SA 4.0
  4. 4. Oosterschelde, Zeeuwse meren, 158_13_400, NL:© Stefan · CC BY-NC 4.0
  5. 5. 4318 Brouwershaven, Nederland:© Stefan · CC BY-NC 4.0
  6. 6. Strijenham:© Adrie Rolloos · CC BY-NC 4.0
  7. 7. Nieuwe Kerkweg, 4318 Scharendijke, Nederland:© Marleen Schouten · CC BY-NC 4.0
  8. 8. Grevelingen, Ouddorp, Zuid-Holland, NL:© no rights reserved · CC0
  9. 9. Veerweg, 4675 RB Tholen, Nederland:© Carla van Westing · CC BY-NC 4.0
  10. 10. Breskens, Països Baixos:© jalaball · CC BY-NC 4.0
Weduweroos, photo 1 of 10
1/10 © Ron Ates · CC BY-NC 4.0

what is it?

De weduweroos ( Cylista undata , taxonsynoniem Sagartiogeton undatus ) is een zeeanemonensoort uit de familie Sagartiidae. Cylista undatus werd in 1778 voor het eerst wetenschappelijk beschreven door Otto Friedrich Müller.

base stats

  • NL sightings 191iNaturalist, research grade
  • worldwide 490iNaturalist observations

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 191 times in the Netherlands on iNaturalist: the #10 most seen of the jellyfish, starfish, worms & co in NL.
  • 490 observations worldwide on iNaturalist.

fact sheet

Nederlands
Weduweroos
scientific name
Sagartia undata
class
Anthozoa
order
Actiniaria
family
Sagartiidae
sightings in NL
191
sightings in Europe
302
sightings worldwide
490
GBIF records in NL
641
weight
—
length
—
lifespan
—

relatives· Sagartiidae

Sources: iNaturalist taxon 1500748, Wikidata Q105897837, GBIF 2257820, Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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