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Noble pen shell (Pinna nobilis)

Photo of Noble pen shell (Pinna nobilis)

Key facts

Scientific name
Pinna nobilis
Common name
Noble pen shell
Category
Molluscs
Family
Pinnidae
Genus
Pinna
Size
30–120 cm
Depth
1–60 m
IUCN status
Critically endangered (CR)
Danger level
Harmless
Habitats
seagrass, sand
Behaviours
sessile, filter-feeder
Ocean zones
East Atlantic, Mediterranean

Description

Pinna nobilis is the largest bivalve in the Mediterranean, reaching 120 cm, with a triangular shell planted vertically in Posidonia seagrass and anchored by a byssus. Since 2016, a massive epidemic caused by the parasite Haplosporidium pinnae has driven near-extinction across much of the Mediterranean. Classified Critically Endangered. Mediterranean endemic, symbol of seagrass meadows, strictly protected.

Photo of Noble pen shell

Photo of Noble pen shell (Pinna nobilis)Photo of Noble pen shell (Pinna nobilis)Photo of Noble pen shell (Pinna nobilis)

Frequently asked questions

How big is the Noble pen shell?
Noble pen shell (Pinna nobilis) reaches 30–120 cm in length.
At what depth can you find the Noble pen shell?
Noble pen shell is found between 1–60 m deep.
Is the Noble pen shell dangerous to divers?
Danger level: Harmless.
What is the conservation status of the Noble pen shell?
IUCN status: Critically endangered (CR).
Where can you find the Noble pen shell?
Found in: East Atlantic, Mediterranean.

Other species in the family Pinnidae

  • Atrina vexillum - Flag Pen Shell
  • Atrina rigida - Rigid Pen Shell

Sources

  • Taxonomy: WoRMS (AphiaID 140780)
  • Photos: iNaturalist (CC BY-NC)
  • Distribution: GBIF (taxonKey 4374731)
  • Conservation: IUCN Red List
  • Encyclopedia: Wikipedia