nautilus shell

animal aquatic black bony cephalopod chamber chambered chambers closeup closeups coil coiled coiling curve curves delicate design designs detail details different elegant fossil fossils iridescence iridescent life light macro macros marine marking markings mauve mollusca natura natural nature nautilida nautilidae nautilina nautilius nautilus nautiluses object objects ocean orange pattern patterns pearl pearlescence pearlescent phragmocone pink pompilius sand sea seashell seashells shell shells shiny spiral spirals swirl swirls wet