Scaly Scallop
Caribachlamys sentis (Reeve, 1853)
Family Pectinidae
The Scaly Scallop (see pic below) is found in certain location on S. Hutchinson Island. It's easy to spot because of its color. There are two main types of color: orange and purple (see below).
The Scaly Scaop is found further south on Hobe Sound and Jupiter beaches as well.