Pectens or Scallops are one of the few bivalve shells that actually swim.
Most species live in tropical waters, but several live in polar waters.
The muscle is the part consumed by humans. Scallop shells have been featured in art, architecture, and religion throughout history. Ancient Greeks used a stylized scallop as a shoulder clasp for their tunics. Scallops were added to the coat of arms of many British families as a reference to Catholic ancestors who had participated in the Crusades. In today's world the scallop is a popular design in architecture and is well known as the Shell Gasoline logo.