The Pinna Nobilis, also known as the noble pen shell, is a large bivalve mollusk found in the Mediterranean Sea and parts of the Atlantic Ocean. It can grow up to 1 meter in length and is characterized by its elongated, fan-shaped shell. This species plays a crucial role in marine ecosystems, providing habitat for various organisms and contributing to the health of seagrass beds. Pinna Nobilis is known for its impressive size and unique structure, which consists of two hinged shells. It primarily feeds on plankton by filtering water through its gills. Unfortunately, this species is currently threatened due to habitat loss, pollution, and overfishing, leading to conservation efforts aimed at protecting its populations.