Biological and Anthropogenic Sound Sources: Effects and Control in ESONET Cetacean sound production/reception mechanisms. Acoustic Head-Related Transfer Functions (HRTF) Model Acoustic propagation model and Acoustic Target Model Acoustic Trauma and Hearing Loss in Cetaceans Acoustic release of gas bubbles to prevent cetacean entanglement in fishing nets Analysis of acoustic signals and cetacean biosonar intrinsic mechanism A passive sonar to detect cetaceans and prevent collisions with vessels Auditory evoked potentials in cetaceans Experiments at sea