Pecten maximus, common name the "great scallop" or "king scallop", is a species of scallop, an edible saltwater clam, a marine bivalve mollusc in the family Pectinidae, the scallops. This is the type species of the genus. This species may in fact be conspecific with Pecten jacobaeus, the "pilgrim's scallop", which has a much more restricted distribution. 
The energy corporation Royal Dutch Shell derives its highly recognizable logo from this species.
Live individual of Pecten maximus
on the right, next to Ostrea edulis
- MarLIN info at: 
- ITIS info at: 
- A live individual, upper shell covered in sediment: