Nazi Munitions, Torpedoes and Naval Mines: The Way Ocean Creatures Flourishes on Abandoned Weapons

In the slightly salty sea off the German coast sits a graveyard of Nazi bombs, torpedo heads and naval mines. Thrown off barges at the conclusion of the World War II and neglected, numerous weapons have fused into clusters over the decades. They comprise a corroding layer on the shallow, silty seafloor of the Lübeck Bay in the western part of the Baltic Sea.

Over the decades, the wartime weapons was overlooked and forgotten about. A increasing amount of visitors traveled to the coastal areas and tranquil sea for jetskiing, kite surfing and entertainment venues. Underwater, the weapons eroded.

Researchers anticipated to see a barren area, with nothing living there because it was all toxic, explains a scientist.

When the initial researchers went looking to see what they were affecting to the marine environment, some of us thought they would find a lifeless zone, with nothing living there because it was all poisoned, says the lead researcher.

What they discovered surprised them. Vedenin recounts his team members shouting with surprise when the underwater vehicle first transmitted footage. That moment was a great moment, he says.

Numerous of marine animals had established habitats among the munitions, forming a regenerated habitat denser than the ocean bottom around it.

This marine city was evidence to the tenacity of life. It is actually surprising how much life we observe in locations that are expected to be dangerous and dangerous, he explains.

More than 40 sea stars had piled on to one exposed piece of explosive material. They were dwelling on steel casings, ignition chambers and carrying containers just centimetres from its volatile core. Fish, crustaceans, anemones and bivalves were all observed on the discarded explosives. You could compare it with a reef ecosystem in terms of the quantity of fauna that was inhabiting the area, states Vedenin.

Surprising Population Density

An mean of more than forty thousand creatures were dwelling on every square metre of the munitions, experts wrote in their paper on the discovery. The nearby seabed was much sparser, with only eight thousand individuals on every meter squared.

It is paradoxical that things that are intended to destroy all life are hosting so much marine organisms, explains Vedenin. You can see how the natural world evolves after a devastating occurrence such as the World War II and how, in certain respects, life returns to the most dangerous places.

Artificial Features as Marine Environments

Man-made constructions such as sunken vessels, offshore windfarms, drilling platforms and pipelines can offer substitutes, compensating for some of the destroyed habitat. This research shows that weapons could be similarly beneficial – the explosion of life on those in the Bay of Lübeck is likely to be repeated in different areas.

Between the late 1940s and 1948, 1.6 million tonnes of arms were discarded off the German coast. Countless of people loaded them in boats; a portion were deposited in designated locations, the remainder just thrown overboard during transport. This is the first time scientists have documented how marine life has adapted.

Worldwide Instances of Marine Adaptation

• In the US, decommissioned energy installations have become reef ecosystems
• Shipwrecks from the World War I have become environments for marine life along the Potomac in Maryland
• Military vehicle parts that have become habitat to coral off Asan in the Pacific island

These locations become even more important for organisms as the marine environments are increasingly depleted by fishing, seafloor dredging and boat mooring. Sunken ships and weapons dump sites effectively act as protected areas – they are not national parks, but almost any kind of human activity is banned, states Vedenin. Therefore a lot of species that are typically rare or diminishing, such as the Baltic cod, are flourishing.

Future Factors

Anywhere warfare has happened in the last century, surrounding seas are often littered with weapons, explains Vedenin. Many millions of tons of explosive material remain in our marine environments.

The sites of these explosives are poorly mapped, partially because of international boundaries, restricted military information and the situation that documents are stored in historic archives. They create an detonation and security danger, as well as threat from the continuous release of poisonous compounds.

As the German government and different states begin clearing these artifacts, researchers hope to preserve the ecosystems that have developed nearby. In the Bay of Lübeck explosives are presently being cleared.

Researchers recommend substitute these metal carcasses remaining from weapons with some safer, various safe structures, like possibly concrete structures, says Vedenin.

He now aspires that what happens in Lübeck sets a model for substituting material after weapon clearance in different areas – because even the most damaging weaponry can become framework for ocean ecosystems.