The chapter "Aquatic Animal Telemetry: A Panoramic Window into the Underwater World" by Nigel E. Hussey from the University of Windsor highlights the profound changes in global aquatic environments due to human activities and the resulting shifts in organism distribution. The authors emphasize that understanding these changes requires knowledge of animal movements, interactions, and the underlying physiological and environmental processes. Traditional challenges in studying aquatic ecosystems have been overcome by rapid technological advancements, particularly in electronic tracking devices such as acoustic and satellite transmitters. These advancements have enabled the monitoring of animals across diverse habitats, from poles to abyssal depths, and over various scales of time and space. Telemetry, combined with biologgers and nonlethal biopsy, provides insights into feeding events, predator-prey interactions, and social behavior, enhancing our understanding of trophic dynamics and population connectivity. The future of aquatic telemetry lies in establishing accessible and cost-effective infrastructure, promoting multidisciplinary tagging approaches, and fostering a global network for data sharing and collaboration. This network will be crucial for advancing scientific knowledge and effectively managing aquatic resources and ecosystems in the face of increasing human pressures and environmental changes.The chapter "Aquatic Animal Telemetry: A Panoramic Window into the Underwater World" by Nigel E. Hussey from the University of Windsor highlights the profound changes in global aquatic environments due to human activities and the resulting shifts in organism distribution. The authors emphasize that understanding these changes requires knowledge of animal movements, interactions, and the underlying physiological and environmental processes. Traditional challenges in studying aquatic ecosystems have been overcome by rapid technological advancements, particularly in electronic tracking devices such as acoustic and satellite transmitters. These advancements have enabled the monitoring of animals across diverse habitats, from poles to abyssal depths, and over various scales of time and space. Telemetry, combined with biologgers and nonlethal biopsy, provides insights into feeding events, predator-prey interactions, and social behavior, enhancing our understanding of trophic dynamics and population connectivity. The future of aquatic telemetry lies in establishing accessible and cost-effective infrastructure, promoting multidisciplinary tagging approaches, and fostering a global network for data sharing and collaboration. This network will be crucial for advancing scientific knowledge and effectively managing aquatic resources and ecosystems in the face of increasing human pressures and environmental changes.