How undersea cables may affect marine life
BBCHow undersea cables may affect marine life Jean-Sebastien Evrard/Getty Images Submarine cables carry electricity and information across vast oceans and seas, but we're only beginning to understand their possible impact on delicate marine life. Ingunn B Haslekaas/Getty Images In shallower water, boats may be prohibited from coming near cables, which can result in healthier fish stocks "During subsea installation, companies will try to bury a cable beneath the sediment to protect it," says Bastien Taormina, a researcher at the Norwegian Institute of Marine Research in Bergen. Boris Horvat/Getty Images Telecommunications cables provide the information pathways for more than 95% of international data In experimental studies performed in aquariums, marine organisms sensitive to magnetic fields have been shown to exhibit behavioural responses to EMF, although at exposure levels far larger than those emitted by power cables. Almost two decades ago, researchers at the Monterey Bay National Marine Sanctuary, in collaboration with the National Oceanic and Atmospheric Administration, conducted a survey of a seamount thermometry cable on the deep seafloor off the coast of central California – a survey considered unique at the time for investigating the biological impact of subsea cables.
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