The seas and oceans, including the North Sea and Baltic Sea, are intensively used by humans. They provide food, energy, raw materials, transportation routes, and recreation. However, overuse is placing increasing pressure on fragile marine ecosystems. Sustainable solutions and ‘ecological guardrails’ are needed to balance human demands with marine protection.
Latvia will assume the two-year rotational chairmanship of the Baltic Marine Environment Protection Commission (HELCOM) on 1 July 2022. Germany’s Chair focused on biodiversity and climate, sought solutions for unexploded ordnance and underwater noise and extended measures to combat pollution of the Baltic Sea through eutrophication, hazardous substances and marine litter.
The oceans surrounding Antarctica are among the few regions in the world where there is little underwater noise caused by human activities. An UBA study shows that the scientific use of airguns can emit noise in to this sanctuary at distances of 2000 kilometres which may reduce the naturally available communication range of blue and fin whales to as little as 1%.
Whales and seals depend on their sense of hearing for survival. Man-made underwater sounds can impair their hearing in both the short and long term, displace them from vital habitats, cause a change in important patterns of behaviour and thereby deteriorate the survival capacity of these marine mammals.
