#4507 · 🦀 crabs & other crustaceans
Pacific Acorn Barnacle
🇳🇱 Pacifische zeepok ·Balanus glandula
🦀 Crabs & other crustaceans 📍 in Europe, not in NL
7 photos from iNaturalist (Creative Commons) · credits & licences
what is it?
S. state of Alaska to Bahía de San Quintín near San Quintín, Baja California. They are commonly found in intertidal waters on mussels, rocks and pier pilings.
base stats
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
- No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
- 12,940 observations worldwide on iNaturalist.
- Scientifically named by Edward Davies Davenport in 1854 (172 years ago).
fact sheet
- English
- Pacific Acorn Barnacle
- Nederlands
- Pacifische zeepok
- scientific name
- Balanus glandula
- class
- Hexanauplia
- order
- Balanomorpha
- family
- Balanidae
- sightings in NL
- 0
- sightings in Europe
- 1
- sightings worldwide
- 12,940
- GBIF records in NL
- 1
- weight
- —
- length
- —
- lifespan
- —
- named
- 1854 by Edward Davies Davenport
relatives· Balanidae
Sources: iNaturalist taxon 81610, Wikidata Q3809072, GBIF 2115706, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.