CreatureData

Bay barnacle

Amphibalanus improvisus (Darwin, 1854)

Status not recordedcrustaceans

The bay barnacle (Amphibalanus improvisus) is a species in the family Balanidae, order Balanomorpha.

No freely licensed photo yet

Quick facts about the bay barnacle

Weight
Not recorded
Length
Not recorded
Lifespan
Not recorded
Main food
Not recorded
Habitat
Not recorded
Young per litter or clutch
Not recorded
Conservation status
Not recorded
Countries on record
Not recorded

Where does the bay barnacle live?

Not recorded

Where has it been introduced?

The Global Register of Introduced and Invasive Species lists the bay barnacle as introduced in 31 countries, and flagged as invasive in 18 of them.

  1. Australiainvasive
  2. Azerbaijaninvasive
  3. Denmarkinvasive
  4. Estoniainvasive
  5. Finlandinvasive
  6. Franceinvasive
  7. Iraninvasive
  8. Irelandinvasive
  9. Italyinvasive
  10. Japaninvasive
  11. Latviainvasive
  12. Lithuaniainvasive
  13. Polandinvasive
  14. Romaniainvasive
  15. Russiainvasive
  16. Swedeninvasive
  17. Turkmenistaninvasive
  18. Ukraineinvasive
  19. Argentina
  20. Belgium
  21. Bulgaria
  22. Croatia
  23. Egypt
  24. Georgia
Show 7 more countries
  1. Germany
  2. Lebanon
  3. Norway
  4. South Korea
  5. Türkiye
  6. United Kingdom
  7. Vietnam

Introduced means brought by people and now present; invasive means the country's checklist records an impact. A species can be native to one part of a country and introduced in another. Source: Global Register of Introduced and Invasive Species (CC BY 4.0).

Is the bay barnacle endangered?

No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.

How is the bay barnacle classified?

  1. kingdomAnimalia
  2. phylumArthropoda
  3. classThecostraca
  4. orderBalanomorpha
  5. familyBalanidae
  6. genusAmphibalanus
  7. SpeciesAmphibalanus improvisus (Darwin, 1854)

Synonyms Balanus improvisus, Balanus improvisus assimilis, Balanus improvisus var. assimilis, Balanus ovularis

Other names and names in other languages (23)
  • Acorn barnacleEnglish
  • Little ivory barnacleEnglish
  • brakvandsrurDanish
  • Brackwasser-SeepockeGerman
  • Percebe de bahíaSpanish
  • Tavaline tõruvähkEstonian
  • merirokkoFinnish
  • balane bernacheFrench
  • Balano europeoItalian
  • ヨーロッパフジツボJapanese
  • 흰따개비Korean
  • Baltoji jūrų gilėLithuanian
  • Parastā jūraszīleLatvian
  • brakkvannsrurNorwegian Bokmål
  • brakwaterpokDutch
  • brakkvassrurNorwegian Nynorsk
  • Pąkla niespodziewanaPolish
  • Необычный морской желудьRussian
  • skátnaNorthern Sami
  • slät havstulpanSwedish
  • Kleine ElfenbeinseepockeGerman
  • petite balane ivoireFrench
  • Brakwater-zeepokDutch

Catalogue of Life

Relatives of the bay barnacle

Other species in the same genus Amphibalanus.

CompareBay barnacle vs Striped barnacleBay barnacle vs Iiory barnacleBay barnacle vs Reticulated barnacleBay barnacle vs Amphibalanus caboblanquensis

Common questions

Answered only where our data holds the answer.

Is the bay barnacle an invasive species?

In some places. The Global Register of Introduced and Invasive Species flags the bay barnacle as invasive in 18 countries, including Australia, Azerbaijan, Denmark, Estonia and Finland. It lists it as introduced in 31 in all.

What kind of animal is the bay barnacle?

The bay barnacle (Amphibalanus improvisus) belongs to the family Balanidae in the order Balanomorpha.

Sources and how to cite this page

Data as of 2026-11-14. How this page is put together.

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APA

CreatureData. (2026). Bay barnacle (Amphibalanus improvisus). Retrieved from https://creaturedata.com/animals/bay-barnacle

MLA

“Bay barnacle (Amphibalanus improvisus).” CreatureData, 2026, https://creaturedata.com/animals/bay-barnacle.

BibTeX
@misc{bay_barnacle_2026,
  title = {Bay barnacle (Amphibalanus improvisus)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/bay-barnacle},
  note = {Data as of 2026-11-14}
}