A recent global report released on World Oceans Day on June 8 highlights the alarming impact of Noise Pollution on marine wildlife due to the increasing number of marine vehicles and underwater surveys. The report, by the Convention on the Conservation of Migratory Species of Wild Animals (CMS), provides practical guidance on reducing noise pollution from shipping, seismic airgun surveys, and pile driving.
The report emphasizes that anthropogenic noise can cause direct injuries and auditory threshold shifts in marine animals, impairing their Communication, ability to detect threats, and find food, sometimes resulting in death. It also states that marine wildlife, including migratory species and their prey, rely on Sound for essential life functions such as communication, prey and predator detection, and orientation.
Regarding seismic airgun surveys, the report emphasizes the need for quieter alternatives like Marine Vibroseis, which produces controlled, lower-frequency seismic signals, reducing the threats posed to marine life. Mitigation measures are also outlined for situations where these alternatives cannot be employed.