cut away of a chambered nautilus shell, mother of pearl shell, popular cephalopod

animal animals away background big black cephalopod cephalopods chamber chambered cut cutaway empty fossil house ichthyology isolated isolation large life marine mollusc molluscs mollusk mollusks mother nacre nautilidae nautilus ocean orange pattern pearl pearly pompilius popular red sea seashell seashells shell shells spiral spiraling squid squids striped underwater water white yellow