Nazi Bombs, Torpedoes and Mines: How Marine Life Flourishes on Dumped Armaments

In the brackish waters off the Germany's coast rests a wasteland of World War II explosives, torpedo heads and mines. Thrown off vessels at the conclusion of the World War II and forgotten about, countless explosives have accumulated over the decades. They create a rusting blanket on the low-depth, muddy ocean floor of the Lübeck Bay in the western part of the Baltic Sea.

Over the years, the Nazi arsenal was ignored and forgotten about. A increasing amount of tourists traveled to the sandy beaches and calm waters for water sports, kiteboarding and amusement parks. Below the waves, the weapons eroded.

Some of us expected to see a lifeless zone, with no organisms because it was all contaminated, states Andrey Vedenin.

When the initial researchers went investigating to see what they were doing to the ecosystem, the team thought they would find a lifeless zone, with nothing living there because it was all contaminated, says Andrey Vedenin.

What they found surprised them. Vedenin remembers his scientists exclaiming in amazement when the ROV first relayed pictures. It was a memorable occasion, he says.

Numerous of sea creatures had settled on the explosives, creating a renewed marine community richer than the seabed nearby.

This underwater metropolis was proof to the resilience of life. Indeed astonishing how much life we observe in locations that are supposed to be toxic and risky, he says.

In excess of 40 sea stars had piled on to one accessible fragment of TNT. They were residing on iron containers, ignition chambers and carrying containers just centimetres from its explosive filling. Marine fish, crustaceans, anemones and mussels were all found on the old munitions. It's similar to a coral reef in terms of the abundance of creatures that was present, says Vedenin.

Unexpected Population Density

An mean of more than forty thousand animals were living on every square metre of the munitions, researchers documented in their study on the discovery. The surrounding area was much less diverse, with only 8,000 creatures on every meter squared.

It is ironic that objects that are designed to destroy everything are attracting so much life, states Vedenin. You can see how the natural world adjusts after a catastrophic event such as the second world war and how, in some way, life finds its way to the most dangerous locations.

Man-made Structures as Marine Habitats

Man-made constructions such as sunken vessels, wind turbines, oil rigs and undersea pipes can provide alternatives, compensating for some of the lost marine environment. This investigation reveals that explosives could be equally advantageous – the bloom of marine organisms on those in the Lübeck Bay is likely to be found in other locations.

Between the late 1940s and the post-war period, 1.6 million tonnes of munitions were disposed of off the German coast. Numerous of individuals loaded them in boats; a portion were dropped in specific locations, the remainder just dumped en route. This is the initial instance experts have recorded how ocean organisms has adapted.

Worldwide Instances of Ocean Transformation

• In the United States, retired oil and gas structures have transformed into coral reefs
• Shipwrecks from the first world war have become environments for creatures along the Potomac River in the state of Maryland
• Military vehicle parts that have become home to reef-building organisms off Asan in Guam

These places become even more important for marine life as the seas are increasingly denuded by fishing, seafloor dredging and anchoring. Shipwrecks and weapons dump sites practically function as sanctuaries – they are not national parks, but nearly any kind of anthropogenic disturbance is restricted, explains Vedenin. Therefore a numerous of species that are otherwise scarce or diminishing, such as the cod fish, are prospering.

Coming Issues

Anywhere military conflict has occurred in the past 100 years, surrounding seas are typically containing explosives, states Vedenin. Millions of tons of explosive material remain in our oceans.

The locations of these weapons are inadequately recorded, partly because of national borders, classified armed forces records and the situation that archives are stored in historic archives. They present an detonation and security danger, as well as risk from the persistent leakage of poisonous compounds.

As Germany and other countries embark on removing these relics, scientists plan to protect the ecosystems that have formed nearby. In the Lübeck Bay munitions are currently being removed.

We should replace these iron structures left from munitions with some safer, some non-dangerous objects, like maybe concrete structures, says Vedenin.

He currently aspires that what transpires in the Bay of Lübeck creates a model for substituting structures after weapon clearance in different areas – because even the most harmful explosives can become foundation for ocean ecosystems.