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Photo of a Atlantic Calico Scallop

Species profile

Atlantic Calico Scallop

Argopecten gibbus

Clams/oysters/mussels4.1K iNat observations

At a glance

Atlantic Calico Scallop (Argopecten gibbus) is a bivalve mollusk regulated in 4 of 66 jurisdictions tracked by CatchRules across the U.S. and Canada.

The strictest bag limit is 24 (Oregon); the most generous is 100 (Federal Waters (DFO)).

Confirmed by 3,214 research-grade iNaturalist observations, with Florida, North Carolina, and South Carolina the top jurisdictions by observation count.

Notable details

  • Has dozens of tiny blue eyes lining its mantle that detect light and approaching movement.
  • Escapes predators by rapidly clapping its shells to jet-propel itself through the water.
  • Shell colors range widely — orange, red, purple, and brown — giving it the calico name.
  • Commercially harvested mainly off the Carolinas and in the Gulf of Mexico.
  • Shells typically reach about 2 inches across.

Background

The Atlantic calico scallop, Argopecten gibbus, is a species of medium-sized edible marine bivalve mollusk in the family Pectinidae, the scallops.

Background excerpt adapted from Wikipedia's Atlantic Calico Scallop article (CC BY-SA). Visit Wikipedia for the full entry.

Photo credit: iNaturalist / Wikipedia. Identification reference only — verify regulations with the issuing wildlife agency before retaining a catch.