Nazi Bombs, Torpedoes and Naval Mines: The Way Marine Life Thrives on Abandoned Armaments

In the brackish sea off the Germany's shoreline sits a graveyard of Nazi bombs, torpedoes and naval mines. Dumped from boats at the end of the second world war and forgotten about, thousands explosives 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 tip of the Baltic Sea.

Over the decades, the Nazi arsenal was ignored and forgotten about. A increasing amount of visitors flocked to the coastal areas and tranquil sea for jetskiing, kiteboarding and entertainment venues. Below the waves, the munitions decayed.

We initially anticipated to see a desert, with no life because it was all toxic, says Andrey Vedenin.

When the initial researchers went looking to see what they were doing to the marine environment, researchers anticipated finding a desert, with no organisms because it was all poisoned, states the lead researcher.

What they found astonished them. Vedenin remembers his colleagues exclaiming in amazement when the submersible first transmitted footage. This was a great moment, he notes.

Thousands of ocean life had settled among the weapons, creating a revitalized habitat more populous than the seabed around it.

This underwater metropolis was proof to the persistence of marine life. Indeed astonishing how much marine organisms we observe in places that are considered dangerous and risky, he states.

More than 40 starfish had gathered on to one accessible fragment of TNT. They were residing on metal shells, fuse pockets and transport cases just a short distance from its volatile core. Marine fish, crabs, sea anemones and bivalves were all discovered on the discarded explosives. It resembles a marine reef in terms of the amount of fauna that was present, notes Vedenin.

Surprising Creature Concentration

An average of more than forty thousand organisms were dwelling on every square metre of the explosives, scientists reported in their study on the discovery. The nearby seabed was much less diverse, with only 8,000 creatures on every meter squared.

It is ironic that items that are designed to destroy all life are hosting so much marine organisms, says Vedenin. You can see how the natural world adapts after a major disaster such as the World War II and how, in certain respects, marine life establishes itself to the most hazardous locations.

Artificial Features as Marine Environments

Artificial features such as sunken vessels, offshore windfarms, oil rigs and undersea pipes can offer alternatives, replacing some of the lost marine environment. This investigation shows that explosives could be comparably beneficial – the explosion of marine organisms on those in the Lübeck Bay is expected to be found in other locations.

Between the late 1940s and the post-war period, 1.6 million tons of arms were discarded off the German coast. Thousands of workers loaded them in boats; a portion were placed in allocated sites, the remainder just discarded at sea en route. This is the initial instance experts have documented how ocean organisms has reacted.

Global Examples of Ocean Transformation

• In the US, retired energy installations have transformed into reef ecosystems
• Sunken ships from the World War I have become homes for creatures along the Potomac in Maryland
• Military vehicle parts that have become environment to reef-building organisms off Asan beach in the Pacific island

These areas become even more important for organisms as the marine environments are increasingly stripped by fishing, bottom trawling and anchoring. Shipwrecks and munitions areas effectively function as protected areas – they are not national parks, but virtually any kind of anthropogenic disturbance is prohibited, says Vedenin. Consequently a numerous of marine species that are usually uncommon or declining, such as the Baltic cod, are thriving.

Future Considerations

Wherever military conflict has occurred in the last century, nearby oceans are often littered with munitions, says Vedenin. Many millions of tonnes of explosive material remain in our marine environments.

The positions of these weapons are insufficiently mapped, partly because of national borders, restricted armed forces records and the fact that documents are hidden in historical records. They present an detonation and security hazard, as well as danger from the persistent release of hazardous substances.

As Germany and different states begin clearing these remains, researchers plan to safeguard the habitats that have developed nearby. In the Lübeck Bay explosives are currently being cleared.

Researchers recommend replace these steel remains left from weapons with certain safer, various harmless materials, like perhaps man-made habitats, suggests Vedenin.

He presently hopes that what occurs in the Bay of Lübeck establishes a example for replacing structures after munitions removal in other locations – because including the most harmful armaments can become framework for ocean ecosystems.