Oysters 4”-5” Pacific Spiny Oyster oyster while the hinged side is

while the hinged side is firmly attached to rocks or coral rubble in relatively shallow water near living reefs

yellowish-white or white in color

sturdy branches and symmetrical head formation suit it to moderate wave action encountered close to the surface

Random assortment of sizes in a 1/2 lb bag

The larger polyps are called gastrozooid polyps

Oysters 4”-5” Pacific Spiny Oyster oyster while the hinged side isPinctada 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