Aquatic energy is the academic field and applied concept centered on the study, development, and utilization of energy derived from natural processes and resources within aquatic environments, encompassing sources such as waves, tides, currents, and thermal or salinity gradients. This field investigates the physical principles, technological systems, environmental impacts, and economic viability associated with extracting usable energy from these diverse aquatic phenomena, holding significance for renewable energy portfolios, climate change mitigation, energy security, and sustainable resource management.