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#4653 · 🐌 snails, slugs & other molluscs

Japanese Oyster Drill

🇳🇱 Japanse Stekelhoren ·Ocinebrellus inornatus

🐌 Snails, slugs & other molluscs 📍 in the Netherlands (introduced)
Japanese Oyster Drill, photo 1 of 10
1/10 © Bettina Harvey · CC BY-NC 4.0

what is it?

Ocinebrellus inornatus , commonly called the Japanese oyster drill , Asian oyster drill , Asian drill , and Japanese oyster borer , is a species of small predatory sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.

base stats

  • NL sightings 31iNaturalist, research grade
  • worldwide 349iNaturalist 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 31 times in the Netherlands on iNaturalist.
  • 349 observations worldwide on iNaturalist.
  • Not originally Dutch: it was introduced to the Netherlands.

fact sheet

English
Japanese Oyster Drill
Nederlands
Japanse Stekelhoren
scientific name
Ocinebrellus inornatus
class
Gastropoda
order
Neogastropoda
family
Muricidae
in NL
introduced
sightings in NL
31
sightings in Europe
49
sightings worldwide
349
GBIF records in NL
519
weight
—
length
—
lifespan
—

relatives· Muricidae

Sources: iNaturalist taxon 626388, Wikidata Q10606600, GBIF 4601972, Wikipedia (EN). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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