Every multicellular organism is both a single entity and a collection of entities, and host to an array of other entities like bacteria and gut flora. Additionally, many species, humans especially, organize themselves into larger structures that can be thought of as superorganisms, in the same way that the organization of single celled organisms can be thought of as a multicellular organism. From many, one emerges. This pattern can be further extrapolated with the theory that organelles are the remnants of previously disparate organisms that coevolved in symbiosis. Whether any given lifeform is an individual or a multitude or a component is a matter of differing levels of resolution.
Robert M. Pirsig goes so far as to argue that this pattern extends to ideology, with civilizations-as-superorganisms coalescing into unifying superstructures like capitalism and communism and democracy, and more broadly value sets like conservatism and liberalism (classic) and liberalism (marxist). From there, who's to say. Maybe it remains to be seen, or maybe we're simply not equipped to see, like Pac Man ghosts trying to perceive the third dimension.
The important thing, he concluded, is that life and existence have a fundamental order that manifests as a recursive emergent structure, that you'd be wise to respect and integrate with, because it is quite literally the way things work.