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#4623 · 🐌 snails, slugs & other molluscs

Norwegian Egg Cockle

🇳🇱 Noorse hartschelp ·Laevicardium crassum

🐌 Snails, slugs & other molluscs 📍 in the Netherlands
Norwegian Egg Cockle, photo 1 of 10
1/10 © WoRMS Editorial Board · CC BY-NC-SA 4.0

what is it?

Laevicardium crassum , the Norwegian egg cockle , is a species of saltwater clam, a cockle, a marine bivalve mollusc in the family Cardiidae, the cockles....

base stats

  • NL sightings 72iNaturalist, research grade
  • worldwide 817iNaturalist 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 72 times in the Netherlands on iNaturalist.
  • 817 observations worldwide on iNaturalist.
  • Scientifically named by Johann Friedrich Gmelin in 1791 (235 years ago).

fact sheet

English
Norwegian Egg Cockle
Nederlands
Noorse hartschelp
scientific name
Laevicardium crassum
class
Bivalvia
order
Cardiida
family
Cardiidae
sightings in NL
72
sightings in Europe
579
sightings worldwide
817
GBIF records in NL
4,685
weight
—
length
—
lifespan
—
named
1791 by Johann Friedrich Gmelin

relatives· Cardiidae

Sources: iNaturalist taxon 363965, Wikidata Q1386585, GBIF 2286537, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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