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#4449 · 🦀 crabs & other crustaceans

Asian Shore Crab

🇳🇱 Blaasjeskrab ·Hemigrapsus sanguineus

🦀 Crabs & other crustaceans 📍 in the Netherlands (introduced)
Asian Shore Crab, photo 1 of 10
1/10 © Ondřej Radosta · CC BY-NC 4.0

what is it?

Hemigrapsus sanguineus , the Japanese shore crab or Asian shore crab , is a species of crab from East Asia. It has been introduced to several other shores, and is now an invasive species in North America and Europe.

base stats

  • NL sightings 211iNaturalist, research grade
  • worldwide 7,644iNaturalist 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 211 times in the Netherlands on iNaturalist: the #14 most seen of the crabs & other crustaceans in NL.
  • 7,644 observations worldwide on iNaturalist.
  • Scientifically named by Wilhem de Haan in 1853 (173 years ago).
  • Not originally Dutch: it was introduced to the Netherlands.

fact sheet

English
Asian Shore Crab
Nederlands
Blaasjeskrab
scientific name
Hemigrapsus sanguineus
class
Malacostraca
order
Decapoda
family
Varunidae
in NL
introduced
sightings in NL
211
sightings in Europe
801
sightings worldwide
7,644
GBIF records in NL
31,964
weight
—
length
—
lifespan
—
named
1853 by Wilhem de Haan

relatives· Varunidae

Sources: iNaturalist taxon 48904, Wikidata Q728318, GBIF 2225772, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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