Patagonian Scallop
NamePatagonian Scallop
Scientific NameZygochlamys patagonica
Common NamePatagonian Scallop
FamilyPectinidae
GenusZygochlamys
Speciespatagonica
Geographic DistributionSouthwestern Atlantic Ocean, primarily off the coasts of Argentina, Chile, and the Falkland Islands.
Shell Shapebivalve
Average Size (mm)Up to 80-90 mm in shell height.
Identifying FeaturesCharacterized by numerous long, slender, sensory tentacles extending from the mantle edge, a distinct row of small, black, reflective eyes (ocelli) along the mantle, a strongly ribbed, subcircular to ovate shell, and its inequivalve nature with a more convex right valve. Its presence in deep, cold Patagonian waters is also a key identifier.
Dietfilter-feeder
Rarityrare
Author Citation(King & Broderip, 1832)
Description
A living Patagonian Scallop (*Zygochlamys patagonica*) with its valves slightly agape, revealing the intricate mantle edge. This edge is adorned with numerous long, slender, translucent tentacles and a distinct row of small, black, bead-like eyes. The shell itself is robust, subcircular to ovate, and features prominent radial ribs. The upper valve exhibits a lighter, iridescent whitish-silver hue, while the lower valve is a warmer orange-brown or yellowish color. The scallop is shown on what appears to be a rocky or hard substrate in a dark, likely deep-water, environment.
