Nazi Explosives, Torpedoes and Naval Mines: The Way Marine Life Flourishes on Abandoned Weapons
In the slightly salty waters off the German shoreline sits a collection of World War II explosives, torpedo heads and naval mines. Dumped from barges at the conclusion of the World War II and neglected, countless explosives have fused into clusters over the decades. They comprise a decaying carpet on the low-depth, muddy seafloor of the Bay of Lübeck in the western part of the Baltic Sea.
Over the decades, the explosive stockpile was overlooked and forgotten about. A growing number of tourists came to the sandy beaches and tranquil sea for water sports, kite surfing and entertainment venues. Underwater, the munitions deteriorated.
We initially thought to see a lifeless zone, with nothing living there because it was all poisoned, states Andrey Vedenin.
When the initial researchers went investigating to see what they were affecting to the ecosystem, the team thought they would find a lifeless zone, with nothing living there because it was all poisoned, says Andrey Vedenin.
What they discovered amazed them. Vedenin recalls his scientists exclaiming in amazement when the ROV first relayed pictures. It was a remarkable experience, he recalls.
Thousands of ocean life had made their homes on the munitions, forming a revitalized habitat richer than the ocean bottom nearby.
This underwater metropolis was proof to the persistence of life. Indeed astonishing how much life we discover in areas that are supposed to be toxic and dangerous, he says.
More than 40 sea stars had gathered on to one accessible piece of explosive material. They were dwelling on metal shells, detonator compartments and storage boxes just centimetres from its dangerous content. Fish, crustaceans, anemones and bivalves were all observed on the old munitions. It resembles a marine reef in terms of the amount of fauna that was inhabiting the area, states Vedenin.
Unexpected Population Density
An average of more than 40,000 organisms were living on every square metre of the weapons, experts wrote in their study on the discovery. The nearby seabed was much less diverse, with only 8,000 individuals on every meter squared.
It is paradoxical that items that are meant to destroy everything are hosting so much life, says Vedenin. You can see how the natural world adapts after a major disaster such as the second world war and how, in certain respects, marine life returns to the most hazardous locations.
Artificial Features as Ocean Habitats
Man-made constructions such as sunken vessels, wind turbines, drilling platforms and pipelines can create substitutes, restoring some of the lost marine environment. This research shows that explosives could be comparably beneficial – the bloom of life on those in the Bay of Lübeck is probable to be repeated in other locations.
Between the late 1940s and the post-war period, 1.6m tons of weapons were disposed of off the Germany's shoreline. Numerous of individuals loaded them in barges; some were placed in specific areas, others just dumped en route. This is the first time experts have studied how ocean organisms has reacted.
Worldwide Examples of Marine Adaptation
- In the United States, decommissioned energy installations have turned into coral reefs
- Shipwrecks from the World War I have become environments for wildlife along the Potomac River in Maryland
- Military vehicle parts that have become environment to coral off Asan beach in Guam
These locations become even more crucial for marine life as the seas are increasingly denuded by commercial fishing, bottom trawling and anchoring. Shipwrecks and explosive disposal locations effectively act as sanctuaries – they are not national parks, but nearly any kind of anthropogenic disturbance is prohibited, explains Vedenin. Consequently a lot of organisms that are typically scarce or declining, such as the Baltic cod, are flourishing.
Coming Issues
Wherever armed conflict has happened in the recent history, surrounding seas are often littered with munitions, states Vedenin. Millions of tonnes of explosive material remain in our marine environments.
The sites of these munitions are inadequately mapped, in part because of sovereign limits, classified armed forces records and the situation that archives are stored in historical records. They present an explosion and security hazard, as well as danger from the persistent emission of poisonous compounds.
As Germany and other countries begin extracting these artifacts, scientists aim to preserve the ecosystems that have developed around them. In the Lübeck Bay explosives are presently being extracted.
We should substitute these metal carcasses remaining from weapons with certain less dangerous, various safe objects, like perhaps concrete structures, suggests Vedenin.
He presently hopes that what occurs in the Bay of Lübeck creates a precedent for substituting material after munitions removal elsewhere – because including the most harmful weaponry can become framework for marine organisms.
