World War II Munitions, Torpedo Heads and Naval Mines: The Way Marine Life Flourishes on Abandoned Armaments

In the brackish sea off the Germany's coast rests a graveyard of World War II explosives, torpedo heads and mines. Thrown off boats at the end of the World War II and left behind, numerous weapons have fused into clusters over the decades. They form a decaying carpet on the low-depth, muddy ocean floor of the Bay of Lübeck in the western tip of the Baltic.

Over the decades, the Nazi arsenal was overlooked and neglected. A increasing amount of visitors flocked to the sandy beaches and tranquil sea for jetskiing, kiteboarding and amusement parks. Underwater, the munitions decayed.

Researchers expected to see a desert, with no life because it was all poisoned, says Andrey Vedenin.

When the initial researchers went looking to see what they were doing to the marine environment, the team anticipated finding a lifeless zone, with nothing living there because it was all toxic, says the lead researcher.

What they observed surprised them. Vedenin remembers his team members exclaiming in amazement when the ROV first relayed pictures. This was a memorable occasion, he recalls.

Countless of ocean life had made their homes among the munitions, developing a revitalized marine community more populous than the sea floor surrounding it.

This marine city was proof to the tenacity of marine life. Truly astonishing how much life we find in areas that are expected to be dangerous and dangerous, he says.

In excess of 40 sea stars had clustered on to one accessible fragment of explosive material. They were living on iron containers, ignition chambers and storage boxes just centimetres from its volatile core. Marine fish, crustaceans, sea anemones and bivalves were all observed on the historic weapons. You could compare it with a coral reef in terms of the amount of fauna that was present, states Vedenin.

Remarkable Creature Concentration

An average of more than forty thousand creatures were dwelling on every meter squared of the explosives, experts documented in their research on the observation. The surrounding area was much poorer in life, with only 8,000 organisms on every meter squared.

It is ironic that things that are intended to kill everything are drawing so much marine organisms, says Vedenin. You can see how nature adjusts after a devastating occurrence such as the second world war and how, in some way, life establishes itself to the most hazardous locations.

Artificial Structures as Ocean Habitats

Man-made structures such as sunken vessels, offshore windfarms, drilling platforms and undersea pipes can provide alternatives, replacing some of the removed marine environment. This investigation reveals that munitions could be comparably beneficial – the bloom of life on those in the Lübeck Bay is probable to be duplicated elsewhere.

Between the late 1940s and the post-war period, 1.6 million tonnes of munitions were discarded off the German shoreline. Numerous of people loaded them in boats; some were placed in specific locations, the remainder just discarded at sea en route. This is the initial instance experts have studied how ocean organisms has responded.

Worldwide Instances of Marine Adaptation

• In the US, retired oil and gas structures have become coral reefs
• Shipwrecks from the first world war have become homes for creatures along the Potomac River in the state of Maryland
• Tank tracks that have become habitat to reef-building organisms off Asan in Guam

These areas become even more crucial for organisms as the marine environments are increasingly depleted by commercial fishing, seafloor dredging and boat mooring. Shipwrecks and explosive disposal locations effectively function as sanctuaries – they are not national parks, but virtually any kind of anthropogenic disturbance is banned, explains Vedenin. As a result a many of marine species that are usually rare or diminishing, such as the cod fish, are flourishing.

Coming Considerations

Wherever military conflict has happened in the recent history, surrounding seas are often containing munitions, states Vedenin. Many millions of tonnes of explosive material rest in our oceans.

The positions of these weapons are poorly mapped, in part because of sovereign limits, restricted defense data and the fact that records are buried in old files. They pose an explosion and security hazard, as well as risk from the persistent release of hazardous substances.

As Germany and different states embark on extracting these artifacts, scientists aim to safeguard the ecosystems that have developed in their vicinity. In the Bay of Lübeck explosives are currently being cleared.

Researchers recommend replace these iron structures remaining from weapons with some less dangerous, various safe materials, like possibly concrete structures, states Vedenin.

He presently hopes that what transpires in Lübeck sets a precedent for substituting structures after explosive extraction in different areas – because including the most destructive armaments can become scaffolding for marine organisms.