 Whichever way evolutionary individuals are conceptualized, they do not exhaust the realm of biological individuals any more than do organisms. The general point here is that although evolution is foundational when thinking about interactors and Darwinian individuals, it does not play this role for all kinds of biological individual, as Godfrey-Smith himself recognizes. Indeed, Godfrey-Smith (2013) strikingly (and controversially) proposes that even some organisms, understood from a metabolic point of view, are not Darwinian individuals at all. These are a subset of corporate organisms, multi-species organisms formed through symbiotic relationships between members of different species. Here Godfrey-Smith posits the Hawaiian bobtail squid (Euprymna scolopes) and the Vibrio bacteria they contain as an example (see also Nyholm &amp; McFall-Ngai 2004; Bouchard 2010). Since the squid-Vibrio corporate organism does not itself form the right kinds of parent-offspring lineages it is not a Darwinian individual, differing in this respect with other often-discussed corporate organisms, such as aphid-Buchnera complexes (Andersson 2000):