the shell of the sea urchin heterocentrotus latin: heterocentrotus trigonarius with sharp needles in a stripe

abstract ancient animal animals archeology background beach beautiful beauty black bloom brown celebration centuries closeup color crystal earth excavation explosion fireworks flower frost garden geology green hard hedgehog isolated life macro marine mineral mineralogy natural nature needles object old ornament paleontology pink plant pressure purple science sea seed shape sharp shell spine spring star stripe summer sun thistle transparent trilobite urchin white wild yellow