The term sand dollar (or sea cookie or snapper biscuit in New Zealand, or pansy shell in South Africa) refers to species of extremely flattened, burrowing sea urchins belonging to the order Clypeasteroida.
Posted 7 years ago by Brick in category: animals   Comments (0)





Posted 7 years ago by seekerland in category: art   Comments (1)


Numberphile
Posted 7 years ago by stassi in category: geeky   Comments (0)