Old train carriages now hosting schools of fish

One of our writers look at the new artificial reefs in Georgia

Maddy Kendall
12th November 2024
Image Credits : NOAA National Ocean Service, Flickr
In December last year, American metro system MARTA dumped two train carriages into the coast of Georgia as part of a partnership with the Department of Natural Resources (DNR) reef project. The carriages aim to help develop the oceans ecosystem through a way of environmental combating known as “artificial reefs”.

Artificial reefs are man-made structures that are placed in bodies of water that aim to increase recreational activities particularly in areas where coral reefs have been damaged. In Atlanta, the aim of this specific reef is to help with the local fishing scene. The floor of the coasts that surround Georgia are notoriously sandy and rocky, making it difficult for fish and sea life to thrive and grow - only 5% is the right habitat for game fish.

The first artificial reef to be released by DNR was in 1976 and since then there have been multiple structures recycled and “dumped” into the coasts. From bridges to even a tank, there have been questions as to how safe it is, due to the chemicals normally on these structures. However, these carriages have been thoroughly cleaned and then inspected by the US coast guard ensuring they are clean and stripped of anything that could harm the environment. 

There have been further plans to expand the “reefs”, as the early success has inspired the DNR, with photos being released of swarms of fish gathering around the carriages. There’s also been an increase in algae production, which is especially important as algae is responsible for 80% of oxygen production on earth. Furthermore, on earlier projects there have already been sightings of sea sponge and even soft coral growth in just five years.

These artificial reefs have brought in a quarter of a million a year, achieving a hefty 170 million pounds (220 million dollars)- not including the money earnt from tourism. Although it is still early for these reefs, it has opened a conversation as to if artificial reefs need to be considered for more marine conservation attempts.

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