Across continents and ocean floors, Earth quietly harbors organisms that defy our most basic assumptions about what it means to be a single living thing. From a seagrass meadow in Western Australia that is, in truth, one plant spanning 77 square miles, to a fungal network in Oregon older than many civilizations, nature has been practicing a kind of patient, clonal enormity for millennia. These giants — plant, fungus, tree, and whale — invite us to reconsider the boundaries of identity, individuality, and time itself.