To recap: Way back in January I spawned some sea urchins. The resulting progeny are now almost 7.5 months old, counting from the day that they were zygotes. Once they metamorphosed and became established as post-larval urchins in June, I divided them into three feeding treatments: the kelp Macrocystis pyrifera, the green alga Ulva sp.,…
Notes from a California naturalist
The nature of Nature
