get rid of the Over exaggerated noise pollution from the Club Med in the Saint Anne Marine Park Seychelles.

Loud amplified sound. Pollution Noise. Destruction of the environment and marine park life.

Sound in the sea water problem – Underwater Noise and its Consequences
Internal injuries and stranding 
Marine animals depend on their hearing to navigate, communicate and catch prey. But sound levels in the oceans are rising constantly. 

The most striking consequence of ocean noise pollution is the stranding of whales and dolphins. Stranding’s have been observed to be particularly frequent after naval sonar maneuvers. Extreme sound events like these inflict vascular damage on the brain, lungs and other organs. Further, animals may panic and surface too fast which cause’s nitrogen bubbles to form in the blood – the so-called bends (decompression sickness). The resulting embolism may cause death. Dead animals end up sinking to the seabed or getting beached on the coast.

Physical damage

As is the case for humans, extremely loud sound may cause hearing damage in marine animals. This is a grave problem for the many marine creatures that depend on their hearing for communicating, sensing danger, finding a partner and hunting prey. Other physical consequences of ocean noise pollution include disruption of the schooling structure of fish or impaired growth of shrimp. Even cell changes have been detected in lobsters. Noise means stress and impairs the animals’ immune system which makes them more susceptible to illness in general.

Fleeing valuable habitats

Ocean noise pollution also causes marine animals to flee and abandon valuable habitats, either because of direct impact or because they have to follow their fleeing prey. Ocean noise pollution has a disruptive impact on mating, finding food and nursing young – with grave consequences in populations that are already weakened by other environmental impacts.

A natural ocean soundscape is fundamental to healthy marine life but is being drowned out by an increasingly loud cacophony of noise from human activities, according to the first comprehensive assessment of the issue.

The damage caused by noise is as harmful as overfishing, pollution and the climate crisis, the scientists said, but is being dangerously overlooked. The good news, they said, is that noise can be stopped instantly and does not have lingering effects, as the other problems do.

Marine animals can hear over much greater distances than they can see or smell, making sound crucial to many aspects of life. From whales to shellfish, sea life uses sound to catch prey, navigate, defend territory and attract mates, as well as find homes and warn of attack. Noise pollution increases the risk of death and in extreme cases, such as explosions, kills directly.

Carbon dioxide emissions from fossil fuel burning are also making the oceans more acidic, meaning the water carries sound further, leading to an even noisier ocean, the researchers said. But the movement of marine mammals and sharks into previously noisy areas when the Covid-19 pandemic slashed ocean traffic showed that marine life could recover rapidly from noise pollution, they said.

“Everything from the tiniest plankton up to sharks sense their acoustic environment,” said Prof Steve Simpson at the University of Exeter in England, and part of the review team. “As a result, the animals have to produce sound to communicate, but also to receive sound.” He said noise pollution was like an “acoustic fog” in the ocean.

“Marine animals can only see across tens of metres at most, and can smell across hundreds of metres, but they can hear across entire ocean basins,” said Prof Carlos Duarte at King Abdullah University of Science and Technology in Saudi Arabia, who led the review. Duarte said major assessments of the health of the ocean were ignoring noise: “Yet the scientific literature, when read carefully, provides compelling evidence of human-caused noise being a major source of disruption to the marine ecosystem.”

The review, published in the journal Science, analyzed more than 500 studies that assessed the effects of noise on sea life. About 90% of the studies found significant harm to marine mammals, such as whales, seals and dolphins, and 80% found impacts on fish and invertebrates. “Sound is a fundamental component of ecosystems, [and noise] impacts are pervasive, affecting animals at all levels,” the analysis concluded.

The most obvious impact is the link between military sonar and seismic survey detonations and deafness, mass stranding’s, and deaths of marine mammals. But many uses of sound can be harmed, such as the hums that male toadfish use to attract females and the honks that cod use to coordinate spawning.