Biosonar is an academic concept and research field dedicated to the study of biological sonar systems employed by certain animal species, notably bats and odontocetes. This interdisciplinary area investigates the complex biophysical mechanisms, neurophysiological processes, and behavioral strategies involved in the emission, reception, and interpretation of sound echoes for purposes such as navigation, prey detection, and environmental perception. Its significance lies in advancing fundamental understanding of sensory biology, ecological interactions, and serving as a source of inspiration for biomimetic technologies.