Nazi Munitions, Torpedoes and Naval Mines: The Way Marine Life Flourishes on Dumped Weapons

In the slightly salty sea off the Germany's coast sits a collection of Nazi bombs, torpedo heads and mines. Thrown off vessels at the end of the World War II and left behind, thousands explosives have accumulated over the decades. They form a rusting layer on the shallow, silty ocean floor of the Bay of Lübeck in the western part of the Baltic.

Over the years, the explosive stockpile was overlooked and forgotten about. A increasing amount of tourists traveled to the coastal areas and calm waters for water sports, kiteboarding and amusement parks. Underwater, the munitions deteriorated.

Some of us thought to see a desert, with nothing living there because it was all contaminated, says the lead researcher.

When the initial researchers went looking to see what they were affecting to the ecosystem, the team anticipated finding a desert, with nothing living there because it was all contaminated, explains Andrey Vedenin.

What they found amazed them. Vedenin remembers his team members reacting with shock when the underwater vehicle first sent the images back. That moment was a great moment, he recalls.

Numerous of ocean life had settled among the explosives, developing a revitalized ecosystem richer than the seabed surrounding it.

This underwater metropolis was testament to the persistence of life. It is actually astonishing how much marine organisms we observe in places that are considered toxic and dangerous, he says.

In excess of 40 sea stars had gathered on to one accessible piece of TNT. They were residing on metal shells, detonator compartments and carrying containers just centimetres from its dangerous content. Marine fish, crustaceans, anemones and bivalves were all found on the discarded explosives. It's similar to a marine reef in terms of the abundance of fauna that was present, says Vedenin.

Unexpected Creature Concentration

An mean of more than 40,000 animals were dwelling on every meter squared of the munitions, scientists documented in their paper on the discovery. The surrounding area was much less diverse, with only eight thousand organisms on every square metre.

It is paradoxical that items that are intended to destroy all life are hosting so much marine organisms, says Vedenin. You can see how nature adapts 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 Features as Marine Environments

Artificial features such as shipwrecks, wind turbines, drilling platforms and pipelines can create replacements, compensating for some of the removed habitat. This investigation reveals that weapons could be comparably beneficial – the bloom of life on those in the Lübeck Bay is likely to be found elsewhere.

Between 1946 and 1948, 1.6 million tons of munitions were disposed of off the German coast. Countless of workers loaded them in barges; some were placed in designated areas, others just thrown overboard while traveling. This is the first time experts have recorded how marine life has responded.

Worldwide Examples of Marine Adaptation

• In the United States, decommissioned drilling platforms have turned into marine habitats
• Shipwrecks from the first world war have become homes for creatures along the Potomac River in Maryland
• Military vehicle parts that have become environment to coral off Asan in the Pacific island

These places become even more important for organisms as the oceans are increasingly depleted by commercial fishing, bottom trawling and anchoring. Sunken ships and weapons dump sites practically serve as protected areas – they are not national parks, but nearly any kind of anthropogenic disturbance is prohibited, explains Vedenin. Consequently a lot of species that are otherwise uncommon or diminishing, such as the cod fish, are flourishing.

Future Issues

Wherever armed conflict has occurred in the past 100 years, nearby oceans are typically containing explosives, explains Vedenin. Millions of tonnes of dangerous substances rest in our seas.

The positions of these weapons are poorly recorded, partly because of sovereign limits, secret military information and the situation that records are buried in old files. They present an detonation and security hazard, as well as risk from the ongoing emission of toxic chemicals.

As Germany and additional nations begin extracting these artifacts, researchers aim to protect the habitats that have established nearby. In the Lübeck Bay explosives are already being removed.

We should substitute these iron structures left from munitions with certain less dangerous, various harmless objects, like possibly concrete structures, suggests Vedenin.

He currently wishes that what occurs in the Bay of Lübeck sets a precedent for substituting structures after munitions removal elsewhere – because even the most damaging armaments can become framework for marine organisms.