Pen Shell (Large Saltwater Clam) when broken has this gorgeous rainbow, Marine Biology

Tiny killer threatens giant clam, aquatic emblem of the Med

Pearl - Wikipedia

LAGUNA MARINE WILDLIFE – DRAWING FOR THE PLANET

Observations on Pearls Reportedly from the Pinnidae Family (Pen Pearls)

professor fish heads: The magnificent Pen Shell

Pen Shell (Large Saltwater Clam) when broken has this gorgeous rainbow, Marine Biology

The Pinnidae are a taxonomic family of large saltwater clams sometimes known as the pen shell clam. This sturdy plastic model is lifelike and shows

Pen Shell Clam model

The Sanibel Sea School Experience Blog — Sanibel Sea School

770 questions with answers in MARINE BIOLOGY