Pinna Nobilis | 11 Dec 2023

A huge clam that was on the verge of extinction has made a comeback, with a surge in numbers in waters off Croatia.

The clam, known as the noble pen shell or pinna nobilis, started dying out as a deadly pathogen spread in parts of the Mediterranean around 2016.
The clams, whose shells can grow as much as 1.2 m across, play an important ecological role by filtering seawater and allowing other organisms to flourish.
They have been spotted across the Adriatic and Istria peninsula.