Oysters Imperial Spiny Oyster 3”+ clam The inside is orange and

The inside is orange and there is no operculum

not only adding to the apparent size

The maximum recorded shell length is 145 mm

and they have relatively well-developed nervous systems

including several that are commercially important

Oysters Imperial Spiny Oyster 3”+ clam The inside is orange andPinctada is a genus of saltwater oysters, marine bivalve mollusks in the family Pteriidae, the pearl oysters. These oysters have a strong inner shell layer composed of nacre, also known as "mother of pearl". Pearl oysters are not closely related to either the edible oysters of family Ostreidae or the freshwater pearl mussels of the families Unionidae and Margaritiferidae. Hammer Oysters and Pacific Spiny Oysters are not closely related to true oysters