Ancient Geometryさんのイラストまとめ

Sea urchin shells from around the world. These beautiful creatures usually have five-fold radial symmetry ⭐

Photo: Georg Popp

Polygonal patterns in nature 💚

Epithelial cells in the gallbladder
Stem of Lactuca (cross-section)
Veiled Lady mushroom
Helmet urchin

A marquetry of illusionistic polyhedra decorating the Court Casket of Newbattle Abbey, made in Nuremberg in 1565 at the workshop of The Master of Perspective.
(more pics below)