- Thick, round, ribbed shell with many spines
- Shells often covered in plant, animal, algae growth
- Mantle (edge of shell) is bright orange with black eyes running along it
- Up to 10 inches across
- From northern Alaska to northern Mexico
- Intertidal (area of shoreline covered at high tide and uncovered at low tide) and subtidal (below the low-tide line) waters along exposed outer coasts
- Under rocks and in crevices
- Depths of 0-252 feet
- Rock scallops are suspension feeders who filter particulates and plankton out of the water
- Lobsters, crabs, sea stars, fishes
- Traditional food of coastal First Nations people
- Rock scallops are the heaviest and second-largest scallop species.
- They are sometimes called the purple-hinged rock scallop because the interior of their hinges are purple.
- Unlike all other scallops, rock scallops cement themselves down permanently to a hard surface once they reach maturity (about an inch across).
- These scallops can live up to 20 years!
Sources: CentralCoastBiodiversity.org; Macdonald et al. 1991; lobsteranywhere.com, UMass; Catalina Island Marine Institute
Photo: Kevin Lee