Nazi Explosives, Torpedoes and Naval Mines: The Way Ocean Creatures Prosper on Dumped Armaments

In the slightly salty waters off the German shoreline lies a graveyard of Nazi bombs, torpedo heads and naval mines. Dumped from boats at the conclusion of the World War II and neglected, numerous munitions have become matted together over the decades. They comprise a rusting layer on the shallow, muddy seafloor of the Lübeck Bay in the western tip of the Baltic Sea.

Over the decades, the explosive stockpile was ignored and neglected. A increasing amount of tourists came to the coastal areas and calm waters for water sports, kiteboarding and entertainment venues. Below the waves, the munitions eroded.

Some of us thought to see a barren area, with no life because it was all contaminated, says Andrey Vedenin.

When the first scientists went investigating to see what they were doing to the ecosystem, researchers anticipated finding a lifeless zone, with no organisms because it was all toxic, explains Andrey Vedenin.

What they discovered surprised them. Vedenin remembers his team members reacting with shock when the submersible first transmitted footage. It was a remarkable experience, he says.

Thousands of marine animals had settled on the explosives, forming a revitalized marine community more populous than the sea floor surrounding it.

This underwater metropolis was testament to the persistence of marine life. Truly surprising how much life we observe in places that are expected to be dangerous and risky, he states.

Over 40 sea stars had gathered on to one exposed fragment of TNT. They were residing on metal shells, fuse pockets and storage boxes just centimetres from its explosive filling. Fish, crustaceans, sea anemones and mussels were all found on the discarded explosives. It resembles a reef ecosystem in terms of the quantity of creatures that was present, notes Vedenin.

Unexpected Population Density

An average of more than forty thousand organisms were residing on every meter squared of the weapons, experts reported in their study on the discovery. The adjacent region was much sparser, with only 8,000 organisms on every meter squared.

It is surprising that things that are intended to destroy all life are hosting so much marine organisms, states Vedenin. It's evident how nature adjusts after a devastating occurrence such as the World War II and how, in certain respects, marine life finds its way to the most dangerous areas.

Man-made Structures as Marine Environments

Artificial structures such as shipwrecks, wind turbines, oil rigs and undersea pipes can offer replacements, restoring some of the removed habitat. This research demonstrates that munitions could be comparably beneficial – the proliferation of life on those in the Bay of Lübeck is probable to be repeated in other locations.

Between 1946 and the post-war period, 1.6 million tons of weapons were discarded off the Germany's coast. Thousands of individuals placed them in boats; some were dropped in specific areas, the remainder just thrown overboard en route. This is the initial instance experts have documented how marine life has responded.

Worldwide Instances of Ocean Adaptation

• In the US, decommissioned oil and gas structures have become coral reefs
• Submerged vessels from the first world war have become homes for marine life along the Potomac in Maryland
• Military vehicle parts that have become home to coral off Asan beach in the Pacific island

These areas become even more crucial for marine life as the seas are increasingly stripped by commercial fishing, bottom trawling and anchoring. Sunken ships and explosive disposal locations practically serve as protected areas – they are not national parks, but virtually any kind of human activity is restricted, states Vedenin. Consequently a numerous of species that are usually scarce or diminishing, such as the Baltic cod, are flourishing.

Coming Issues

Anywhere military conflict has happened in the past 100 years, adjacent waters are typically strewn with weapons, explains Vedenin. Many millions of tonnes of dangerous substances rest in our marine environments.

The positions of these explosives are insufficiently mapped, partly because of sovereign limits, secret defense data and the reality that records are hidden in historical records. They pose an detonation and security risk, as well as risk from the continuous leakage of hazardous substances.

As the German government and other countries start removing these relics, scientists aim to preserve the marine communities that have formed around them. In the Bay of Lübeck weapons are presently being cleared.

Researchers recommend replace these steel remains originating from munitions with some more secure, various non-dangerous materials, like maybe concrete structures, suggests Vedenin.

He now hopes that what happens in Lübeck creates a example for substituting structures after weapon clearance in different areas – because even the most harmful explosives can become framework for new life.