World War II Bombs, Torpedoes and Mines: The Way Marine Life Prosper on Dumped Armaments
In the brackish sea off the Germany's coast lies a wasteland of World War II explosives, torpedo heads and mines. Dumped from boats at the end of the second world war and neglected, thousands explosives have become matted together over the years. They create a corroding carpet on the low-depth, silty ocean floor of the Bay of Lübeck in the western tip of the Baltic Sea.
Over the years, the Nazi arsenal was overlooked and forgotten about. A growing number of visitors traveled to the coastal areas and calm waters for water sports, kiteboarding and entertainment venues. Below the waves, the munitions decayed.
Some of us anticipated to see a desert, with no organisms because it was all contaminated, says a scientist.
When the first scientists went investigating to see what they were affecting to the marine environment, researchers anticipated finding a lifeless zone, with no organisms because it was all toxic, says Andrey Vedenin.
What they found amazed them. Vedenin remembers his colleagues reacting with shock when the ROV first sent the images back. This was a memorable occasion, he notes.
Countless of sea creatures had settled amid the weapons, developing a regenerated marine community denser than the ocean bottom around it.
This marine city was proof to the resilience of life. It is actually surprising how much marine organisms we observe in places that are supposed to be hazardous and harmful, he explains.
In excess of 40 sea stars had piled on to one exposed piece of TNT. They were residing on steel casings, ignition chambers and carrying containers just a short distance from its dangerous content. Fish, crabs, sea anemones and mussels were all discovered on the discarded explosives. You could compare it with a reef ecosystem in terms of the quantity of fauna that was inhabiting the area, states Vedenin.
Unexpected Population Density
An average of more than forty thousand creatures were living on every meter squared of the munitions, experts wrote in their study on the discovery. The surrounding area was much sparser, with only eight thousand creatures on every square metre.
It is surprising that things that are meant to kill everything are hosting so much marine organisms, says Vedenin. One can observe how the natural world evolves after a major disaster such as the second world war and how, in certain respects, life finds its way to the most dangerous places.
Man-made Features as Marine Habitats
Man-made structures such as shipwrecks, offshore windfarms, drilling platforms and pipelines can offer substitutes, replacing some of the lost marine environment. This investigation reveals that munitions could be similarly advantageous – the proliferation of marine organisms on those in the Lübeck Bay is likely to be repeated in other locations.
Between the late 1940s and the post-war period, 1.6m tonnes of weapons were disposed of off the German coast. Numerous of people loaded them in boats; a portion were placed in allocated sites, the remainder just thrown overboard while traveling. This is the first time researchers have studied how ocean organisms has reacted.
Global Examples of Marine Transformation
- In the United States, decommissioned energy installations have turned into reef ecosystems
- Sunken ships from the World War I have become homes for marine life along the Potomac in the state of Maryland
- Military vehicle parts that have become home to coral off Asan in the Pacific island
These locations become even more crucial for organisms as the oceans are increasingly denuded by commercial fishing, bottom trawling and anchoring. Sunken ships and explosive disposal locations effectively function as sanctuaries – they are not national parks, but nearly any kind of human activity is prohibited, states Vedenin. Consequently a many of species that are typically scarce or declining, such as the Baltic cod, are flourishing.
Coming Issues
Anywhere warfare has occurred in the recent history, nearby oceans are usually strewn with munitions, states Vedenin. Millions of tonnes of dangerous substances lie in our oceans.
The sites of these explosives are poorly mapped, in part because of international boundaries, classified military information and the situation that archives are hidden in old files. They present an detonation and security danger, as well as threat from the persistent leakage of hazardous substances.
As the German government and other countries start extracting these artifacts, scientists hope to preserve the marine communities that have developed nearby. In the Lübeck Bay explosives are presently being cleared.
Researchers recommend substitute these iron structures remaining from munitions with certain more secure, some harmless structures, like perhaps man-made habitats, states Vedenin.
He currently aspires that what occurs in the Bay of Lübeck establishes a precedent for replacing structures after munitions removal elsewhere – because also the most destructive weaponry can become foundation for new life.