This seminar examines the transformative impact of wearable sensor technologies across healthcare, environmental monitoring, and marine biology. In healthcare, these sensors enable continuous monitoring for enhanced patient care and disease management. Environmental applications range from real-time pollution monitoring to ecosystem management, while in marine biology, wearable sensors facilitate non-invasive studies of aquatic life. The discussion will highlight technological advancements in sensor miniaturization, embedded AI (edge AI) and energy efficiency, emphasizing the critical role of interdisciplinary collaboration in optimizing wearable technologies for diverse applications.