Being produced in the mudflats of the Ria de Aveiro lagoon. The Portuguese oyster, Crassostrea angulata, was replaced by its Pacific congener during the last half of the 20th century because of its vulnerability to viruses and parasites and reduced growth. In Portugal, pure populations (i.e. non-hybrid) of C. angulata can only be found in the Sado estuary.
I was excited to find a Chlamys rubida, or Smooth Pink Scallop, growing on the dock at the marina.The shell looks softened, maybe by a sponge. It was a few inches underwater at high tide, and almost 3" across.
at Suma aquarium.
Shell only...probably dropped by birds