
By ignoring sponges, we blind ourselves to a wondrous hidden biology and get a misleading view of evolution. CREDIT PHOTOGRAPH BY REINHARD DIRSCHERL/ULLSTEIN BILD VIA GETTY
In the words of the FM disc jockeys of our youth, we send this one out to Phil:
In the final exams for our undergraduate zoology degrees, my fellow-majors and I were given an assortment of petri dishes, each of them containing an animal. Our task was to classify the creatures to the phylum level. Now, more than a decade later, I can conjure up only two of the test dishes. The first contained a dead cockroach (phylum: Arthropoda). The other contained a rock in a thin layer of water, with a green, slimy film on one of its faces. Midway through the allotted time, the invigilator observed aloud that many of us seemed to be trying to classify the rock. It was, he assured us, a rock. The unspoken corollary: we should perhaps focus instead on the slime. Continue reading




















