Pinna nobilis Linnaeus, 1758
fan mussel / noble pen shell

Location:
Found in roughly 5-10m depth, Santa Marina, Salina, Eolian Islands.
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Links:
World Register of Marine Species
https://www.marinespecies.org/aphia.php?p=taxdetails&id=140780
SeaLifeBase
https://www.sealifebase.ca/summary/Pinna-nobilis.html
Global Biodiversity Information Facility (GBIF)
https://www.gbif.org/species/4374731​
iNaturalist
https://uk.inaturalist.org/taxa/118945-Pinna-nobilis

International Union for Conservation of Nature (IUCN) status:
Critically Endangered (CR) on the IUCN Red List (Global and Mediterranean)