not just a bunch of urchins

i have sung the praises of sea urchins several times before. their structure and markings have me continually besotted. they manage, like certain clams, to be herd-like and individual all at the same time. except that clams are specifically clam-shaped, whereas sea urchins are suggestively orb-shaped, with intimations of planets and cosmic spheres..

sea urchin shells