Nazi Bombs, Torpedo Heads and Mines: The Way Marine Life Prosper on Discarded Armaments

In the brackish waters off the Germany's coast lies a collection of World War II explosives, torpedoes and mines. Thrown off boats at the conclusion of the World War II and left behind, countless weapons have become matted together over the years. They comprise a rusting blanket on the low-depth, muddy ocean floor of the Lübeck Bay in the western part of the Baltic Sea.

Over the decades, the Nazi arsenal was overlooked and forgotten about. A increasing amount of tourists flocked to the sandy beaches and tranquil sea for water sports, kiteboarding and entertainment venues. Beneath the surface, the munitions eroded.

We initially thought to see a barren area, with no life because it was all toxic, says a scientist.

When the team went looking to see what they were affecting to the marine environment, some of us expected to see a lifeless zone, with nothing living there because it was all contaminated, states the lead researcher.

What they discovered amazed them. Vedenin recalls his colleagues exclaiming in amazement when the ROV first sent the images back. It was a memorable occasion, he notes.

Thousands of sea creatures had established habitats on the weapons, developing a revitalized ecosystem richer than the sea floor surrounding it.

This ocean community was testament to the persistence of marine life. Truly surprising how much marine organisms we find in places that are supposed to be dangerous and dangerous, he states.

More than 40 starfish had piled on to one accessible chunk of explosive material. They were living on metal shells, fuse pockets and carrying containers just a short distance from its dangerous content. Marine fish, crustaceans, sea anemones and mussels were all observed on the discarded explosives. It's similar to a reef ecosystem in terms of the quantity of fauna that was there, says Vedenin.

Surprising Population Density

An mean of more than 40,000 animals were residing on every meter squared of the explosives, scientists wrote in their research on the discovery. The adjacent region was much poorer in life, with only eight thousand individuals on every square metre.

It is paradoxical that objects that are intended to kill all life are attracting so much marine organisms, states Vedenin. One can observe how the natural world adapts after a catastrophic event such as the World War II and how, in some way, life establishes itself to the most hazardous places.

Artificial Structures as Marine Environments

Man-made constructions such as shipwrecks, wind turbines, drilling platforms and undersea pipes can offer substitutes, replacing some of the lost marine environment. This investigation shows that explosives could be comparably advantageous – the proliferation of life on those in the Lübeck Bay is expected to be repeated in different areas.

Between 1946 and the post-war period, 1.6 million tonnes of munitions were dumped off the German coast. Numerous of workers placed them in vessels; some were deposited in designated areas, others just dumped en route. This is the initial instance experts have documented how ocean organisms has responded.

Worldwide Instances of Marine Transformation

• In the US, decommissioned energy installations have turned into reef ecosystems
• Sunken ships from the World War I have become environments for creatures along the Potomac in the state of Maryland
• Military vehicle parts that have become habitat to reef-building organisms off Asan in Guam

These locations become even more important for wildlife as the marine environments are increasingly denuded by commercial fishing, seafloor dredging and anchoring. Shipwrecks and munitions areas effectively act as sanctuaries – they are not official reserves, but virtually any kind of human activity is restricted, says Vedenin. Therefore a lot of marine species that are typically uncommon or decreasing, such as the Baltic cod, are thriving.

Coming Issues

Wherever armed conflict has occurred in the last century, nearby oceans are typically littered with munitions, says Vedenin. Millions of tons of volatile compounds remain in our seas.

The positions of these explosives are insufficiently recorded, partially because of national borders, secret defense data and the situation that documents are hidden in old files. They pose an explosion and safety hazard, as well as threat from the persistent release of hazardous substances.

As Germany and additional nations begin extracting these relics, researchers hope to safeguard the ecosystems that have established around them. In the Lübeck Bay weapons are already being cleared.

Researchers recommend substitute these steel remains left from munitions with certain less dangerous, various harmless objects, like possibly concrete structures, suggests Vedenin.

He currently aspires that what happens in the Bay of Lübeck creates a precedent for replacing habitats after munitions removal in different areas – because even the most harmful weaponry can become scaffolding for new life.