A growing shift in biological and ecological research highlights the importance of cooperation alongside competition in shaping life on Earth, offering new insights that extend beyond science to social and political realms. While Charles Darwin’s theory of natural selection emphasized competition as a driving force of evolution, recent studies underscore that symbiosis—long-term, close interactions between different species—is equally vital to the natural world.
This perspective resonates with longstanding cultural values in Japan, where the concept of wa, or harmony, emphasizes collective well-being over individual interests. The Japanese Buddhist phrase “jita funi,” meaning “self and other are not two,” encapsulates the idea that boundaries between beings are often fluid. In biological terms, this is reflected in symbiotic relationships where distinct species form interdependent unions that together surpass their individual capacities.
Examples of symbiosis abound in nature. The clownfish and sea anemone relationship, widely popularized through media, represents a mutualistic exchange where the fish gains protection from predators while providing food to the anemone. Beneath the soil, networks of fungal threads known informally as the “wood wide web” sustain around 80% of land plants by facilitating the transfer of water and nutrients. These underground fungal networks also play a substantial role in carbon sequestration, capturing approximately 15 billion metric tons of carbon annually—more than a third of global fossil fuel emissions.
Legume plants, which include peas, beans, and lentils, depend on symbiotic nitrogen-fixing bacteria to convert atmospheric nitrogen into forms usable by plants, a critical process for protein production in the global food supply. Soybeans, widely grown worldwide, rely heavily on this interaction, impacting food systems from direct human consumption to livestock feed.
Other key examples include orchids, which require fungal partnerships for germination, and coral reefs, which are formed through symbiosis between animals and algae. Coral ecosystems provide diverse habitats, protect coastlines, and support fisheries valued at trillions of dollars annually.
At a cellular level, all complex organisms—including humans—harbor organelles that originated from ancient symbiotic bacteria, a concept first proposed by Japanese microbiologist Shosaburo Watase in the late 19th century. His early work anticipated the modern understanding that eukaryotic cells represent unions of multiple organisms.
Proponents of this expanded view argue that recognizing the fundamental role of symbiosis challenges the traditional emphasis on competition in biology and has broader implications. It calls into question frameworks that prioritize individual or exploitative gains, suggesting instead that collaboration underpins both evolutionary success and sustainability.
This shift toward appreciating interdependence reveals that cooperation is not merely an idealistic notion but a scientific reality embedded in the structure of life. Understanding life’s interconnectedness, advocates say, is critical to addressing ecological, social, and economic challenges in an increasingly complex world.