EXCLUSIVE: The little known but widespread problem of zinc anodes

The image shows a degrading hull of a recreational vessel

Source: Clean Harbours Partnership

Out of the many pollutants that affect the water in ports and harbours, a little known one is the danger of zinc, says the Clean Harbours Partnership (CHP).

All vessels and harbour installations that use zinc anodes and antifouling are releasing metals, mostly zinc and copper, into the marine environment.

The problem with metals in the ocean is that they do not degrade. Instead, they build up in sediment on the seabed where they are ingested by marine organisms, causing harm to reproduction.

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