Like certain terrestrial animal and plant species, symbiotic relationships among marine species are ubiquitous and are increasingly being studied by scientists. These associations help create balance within an ecosystem. Take, for example, sea urchins, mussels, and corals (shown here) that have colonized the same reef: despite their constant growth, no single species will gain the upper hand over the others. They will find a balance that allows them to coexist in symbiosis. In some cases, the presence of one species will even be beneficial to the other; this is known as mutualism—that is, two species that depend on one another for food, protection, or other reasons. In Latin, “symbiosis” means “living together.” This artwork is an ode to diversity, to beneficial interactions, and to community life.