Pinna nobilis
Species of bivalve
Pinna nobilis
Pinna nobilis, known by the common names noble pen shell and fan mussel, is a large species of Mediterranean clam, a marine bivalve mollusc in the family Pinnidae, the pen shells. It reaches up to 120 cm (4 ft) of shell length. It produces a rare manganese-containing porphyrin protein known as pinnaglobin.
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