Narwhal Silence: The Devastating Impact of Shipping Noise on Arctic Wildlife.
In one of Earth's quietest environments, a silent killer has been discovered. The clicks and whistles of narwhals, found in the eastern Arctic entrance of the Northwest Passage, have been silenced by the growing threat of shipping noise. A recent study conducted in 2023 revealed that when the Nordic Odyssey, an ice-class bulk carrier, approaches, its low engine rumble gives way to a wall of sound created by millions of collapsing bubbles from its propeller. The narwhals' acoustic signals, evolved for this environment, fall silent.
The research, led by Alexander James Ootoowak, an Inuk hunter and field technician, confirms that underwater radiated noise – sound energy emitted through ships' hulls, propellers, and machinery – is disrupting marine life. This evidence mounts the case for quieter ships to protect marine species in the Arctic.
Experts agree that reducing noise from shipping vessels is crucial to preserve wildlife habitats. "We need to bring everybody together to work toward a solution that will reduce the sound in our ocean to protect marine species, regardless of where the ships are operating," said Michelle Sanders, director general of the Innovation Center at Transport Canada.
However, implementing these solutions poses challenges, particularly within the shipping industry's conservative nature. The development of quieter ships is an ongoing process. Giorgio Burella, a naval architect at Robert Allan, notes that "ships don't gain anything from making noise." Design innovations can target primary sources of ship noise, such as advanced propeller designs and hull modifications.
Initiatives like the Enhancing Cetaceen Habitat and Observation (Echo) programme have pioneered noise reduction measures in critical cetacean habitats through voluntary vessel slowdowns and rerouting. Another milestone is achieved by Pangaea Logistics Solutions, which has incorporated a silent-E designated vessel into its fleet, the Nordic Nuluujaak.
Oceanographer Joshua Jones emphasizes that even below quiet certification standards, shipping noise can still disrupt highly sensitive species such as narwhals. The research conducted in Eclipse Sound confirmed this vulnerability at 20km distances far beyond previous studies' predictions.
The importance of regional solutions cannot be overstated due to the Arctic's unique acoustic challenges. Mads Petersen, chief operating officer of Pangaea Logistics Solutions, acknowledges that "every engine matters" in the acoustic world of narwhals and emphasizes the need for comprehensive noise management across the entire maritime fleet.
A collaborative effort is required to address this pressing issue. As the message spreads about quieter ships, such as the incorporation of silent-E notation into vessels' operations, it is hoped that industry standards will follow suit. For now, every voice counts in the pursuit of a louder ocean – one free from human disturbance for Arctic wildlife.
In one of Earth's quietest environments, a silent killer has been discovered. The clicks and whistles of narwhals, found in the eastern Arctic entrance of the Northwest Passage, have been silenced by the growing threat of shipping noise. A recent study conducted in 2023 revealed that when the Nordic Odyssey, an ice-class bulk carrier, approaches, its low engine rumble gives way to a wall of sound created by millions of collapsing bubbles from its propeller. The narwhals' acoustic signals, evolved for this environment, fall silent.
The research, led by Alexander James Ootoowak, an Inuk hunter and field technician, confirms that underwater radiated noise – sound energy emitted through ships' hulls, propellers, and machinery – is disrupting marine life. This evidence mounts the case for quieter ships to protect marine species in the Arctic.
Experts agree that reducing noise from shipping vessels is crucial to preserve wildlife habitats. "We need to bring everybody together to work toward a solution that will reduce the sound in our ocean to protect marine species, regardless of where the ships are operating," said Michelle Sanders, director general of the Innovation Center at Transport Canada.
However, implementing these solutions poses challenges, particularly within the shipping industry's conservative nature. The development of quieter ships is an ongoing process. Giorgio Burella, a naval architect at Robert Allan, notes that "ships don't gain anything from making noise." Design innovations can target primary sources of ship noise, such as advanced propeller designs and hull modifications.
Initiatives like the Enhancing Cetaceen Habitat and Observation (Echo) programme have pioneered noise reduction measures in critical cetacean habitats through voluntary vessel slowdowns and rerouting. Another milestone is achieved by Pangaea Logistics Solutions, which has incorporated a silent-E designated vessel into its fleet, the Nordic Nuluujaak.
Oceanographer Joshua Jones emphasizes that even below quiet certification standards, shipping noise can still disrupt highly sensitive species such as narwhals. The research conducted in Eclipse Sound confirmed this vulnerability at 20km distances far beyond previous studies' predictions.
The importance of regional solutions cannot be overstated due to the Arctic's unique acoustic challenges. Mads Petersen, chief operating officer of Pangaea Logistics Solutions, acknowledges that "every engine matters" in the acoustic world of narwhals and emphasizes the need for comprehensive noise management across the entire maritime fleet.
A collaborative effort is required to address this pressing issue. As the message spreads about quieter ships, such as the incorporation of silent-E notation into vessels' operations, it is hoped that industry standards will follow suit. For now, every voice counts in the pursuit of a louder ocean – one free from human disturbance for Arctic wildlife.