I have an interest with the philosophy of biology, but I’m a dilettante. My background is in evolutionary biology; I haven’t had a philosophy class since I was an undergrad at UCF. Nevertheless, if you study the so-called Major Transitions, you’re inevitably going to end up reading some philosophy. Topics such as multilevel selection, emergence, and the nature of biological individuality come up over and over again in this field, and philosophers of biology have made important contributions in all of them.
Among these, I find discussions of the nature of biological individuality fascinating, and I’ve written about it often here. Volvox and its relatives often come up in these discussions, and they have for a long time. A new edited volume, Nature Alive, continues this trend in a chapter by Lukasz Lamza (“Cells, organisms, colonies, communities–the fuzziness of individuality in modern biology”).