In ecosystems, an organism’s life is bound to countless others, impacting its underwater world in unexpected ways. Observed in plant-eating fish that intertwine themselves with the aquatic plants that they, and countless others, rely on – they use plants as hiding places and expel nitrogen in their bowel movements that the plants need for growth. They control phytoplankton populations that, if unregulated, could bloom and block plants from absorbing sunlight for photosynthesis. Even in their dea