American Museum of Natural History — The noble pen shell (Pinna nobilis) is one of the
![American Museum of Natural History — The noble pen shell (Pinna nobilis) is one of the](https://64.media.tumblr.com/d4f7ac8cb7d86cee899b10b917aee8f8/tumblr_nt2yamagpe1qio57co2_1280.jpg)
The noble pen shell (Pinna nobilis) is one of the largest bivalves, native to the Mediterranean region, where it lives in sea grass beds, partly buried in soft sediment and anchored by the byssus
![](https://www.shutterstock.com/image-photo/mediterranean-fan-mussel-pinna-nobilis-260nw-2375516855.jpg)
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American Museum of Natural History — The noble pen shell (Pinna
![](http://www.drustvo20000milja.hr/wp-content/uploads/2019/05/pinna_kolocep-1.jpg)
Marine Explorers Society 20.000 leagues