Geophysical exploration of the seabed is typically done through seismic surveys, using
airgun arrays that produce intense, low-frequency-sound pulses 1 that can be heard over
hundreds of square kilometers, 24/7. 2, 3 Little is known about the effects of these sounds on
free-ranging fish behavior. 4–6 Effects reported range from subtle individual change in
activity and swimming depth for captive fish 7, 8 to potential avoidance 9 and changes in
swimming velocity and diurnal activity patterns for free-swimming animals. 10 However, the …