Outside of left valve

Steve Wilkinson
Specimen collected by TGW Fowler from Padstow habour wall, Cornwall. Length = 42mm.
<em>Mytilus galloprovincialis</em> (Lamarck, 1819)
Steve Wilkinson
Specimen collected by TGW Fowler from Padstow habour wall, Cornwall. Length = 42mm.
Steve Wilkinson
Specimen collected by TGW Fowler from Padstow habour wall, Cornwall. Length = 95mm.
Steve Wilkinson
Specimen collected by TGW Fowler from Padstow habour wall, Cornwall. Length = 95mm.
Steve Wilkinson
Specimen collected by TGW Fowler from Padstow habour wall, Cornwall. Length = 85mm.
Steve Wilkinson
Specimen collected by TGW Fowler from Padstow habour wall, Cornwall. Length = 54mm.
Steve Wilkinson
Specimen collected by TGW Fowler from Padstow habour wall, Cornwall. Length = 54mm.
Steve Wilkinson
Specimen collected by TGW Fowler from Padstow habour wall, Cornwall. Length = 55mm.
Steve Wilkinson
Specimen collected by TGW Fowler from Padstow habour wall, Cornwall. Length = 55mm.
Occassional
Distributed from the south of Britain to the Iberian Peninsula and into the Mediterranean.
Lives attached by byssus threads to any suitable hard substrate. Feeds by filtering phytoplankton.
Solid wedge shpaed shell up to about 10cm in length. The outside is purple, blue or brown in colour; the inside is pearl white bordered with purple or blue. The surface is sculptured with concentric rings.