fibonacci golden ratio. geometric s spiral. snail spiral. sea shell of black triangles. sacred logo template.

logo sequence golden ratio shell nautilus fibonacci spiral snail sea numbers vector conch section geometry fossil illustration seashell nature abstract geometric texture crustacean shellfish design beach isolated animal beauty graphic ocean ornament growth life shape decoration biology aquatic triangles helix jurassic ancient curve symbol repetition part elegant single swirl white background black bk048 shapes sacred template ratio spiral triangles template