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#4745 · 🐌 snails, slugs & other molluscs

Gestippelde knotsslak

Rubramoena amoena

🐌 Snails, slugs & other molluscs 📍 in the Netherlands
Gestippelde knotsslak, photo 1 of 10
1/10 © Bernard Picton · CC BY 4.0

what is it?

Rubramoena amoena is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Fionidae.

base stats

  • NL sightings 5iNaturalist, research grade
  • worldwide 82iNaturalist 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 5 times in the Netherlands on iNaturalist.
  • 82 observations worldwide on iNaturalist.
  • Scientifically named by Albany Hancock in 1845 (181 years ago).

fact sheet

Nederlands
Gestippelde knotsslak
scientific name
Rubramoena amoena
class
Gastropoda
order
Nudibranchia
family
Trinchesiidae
sightings in NL
5
sightings in Europe
65
sightings worldwide
82
GBIF records in NL
176
weight
—
length
—
lifespan
—
named
1845 by Albany Hancock

relatives· Trinchesiidae

Sources: iNaturalist taxon 521103, Wikidata Q50377881, GBIF 8846783, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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