Nazi Munitions, Torpedo Heads and Mines: The Way Ocean Creatures Flourishes on Dumped Armaments
In the brackish waters off the Germany's coast lies a graveyard of World War II explosives, torpedo heads and mines. Thrown off boats at the end of the World War II and forgotten about, thousands weapons have become matted together over the decades. They comprise a decaying layer on the shallow, muddy ocean floor of the Lübeck Bay in the western part of the Baltic Sea.
Over the decades, the wartime weapons was ignored and neglected. A growing number of tourists came to the coastal areas and tranquil sea for water sports, kite surfing and entertainment venues. Below the waves, the munitions eroded.
We initially anticipated to see a desert, with no life because it was all toxic, says a scientist.
When the first scientists went looking to see what they were affecting to the ecosystem, some of us thought they would find a desert, with no organisms because it was all poisoned, explains a scientist.
What they found astonished them. Vedenin recalls his team members exclaiming in amazement when the ROV first transmitted footage. This was a remarkable experience, he says.
Countless of ocean life had settled on the explosives, developing a renewed ecosystem more populous than the sea floor nearby.
This underwater metropolis was evidence to the resilience of life. Indeed surprising how much marine organisms we find in places that are supposed to be dangerous and dangerous, he says.
More than 40 sea stars had gathered on to one accessible chunk of explosive material. They were living on steel casings, ignition chambers and storage boxes just a short distance from its volatile core. Marine fish, crabs, sea anemones and mussels were all discovered on the old munitions. You could compare it with a reef ecosystem in terms of the quantity of fauna that was there, notes Vedenin.
Unexpected Creature Concentration
An mean of more than 40,000 organisms were dwelling on every square metre of the weapons, experts reported in their study on the observation. The nearby seabed was much poorer in life, with only 8,000 organisms on every meter squared.
It is ironic that things that are intended to destroy everything are attracting so much marine organisms, explains Vedenin. You can see how the natural world evolves after a catastrophic event such as the World War II and how, in certain respects, life finds its way to the most dangerous areas.
Man-made Features as Ocean Habitats
Man-made features such as shipwrecks, offshore windfarms, oil rigs and undersea pipes can create substitutes, restoring some of the destroyed marine environment. This investigation reveals that weapons could be equally advantageous – the bloom of life on those in the Bay of Lübeck is likely to be found in other locations.
Between the late 1940s and 1948, 1.6 million tonnes of arms were dumped off the Germany's shoreline. Thousands of individuals transported them in vessels; some were placed in specific sites, others just discarded at sea while traveling. This is the first time researchers have documented how marine life has adapted.
Worldwide Examples of Ocean Adaptation
- In the US, decommissioned oil and gas structures have transformed into marine habitats
- Shipwrecks from the World War I have become homes for creatures along the Potomac in the state of Maryland
- Military vehicle parts that have become habitat to coral off Asan beach in the Pacific island
These locations become even more crucial for wildlife as the marine environments are increasingly stripped by fishing, seafloor dredging and anchoring. Shipwrecks and weapons dump sites practically act as sanctuaries – they are not official reserves, but nearly any kind of human activity is restricted, explains Vedenin. Therefore a many of organisms that are otherwise scarce or diminishing, such as the Baltic cod, are flourishing.
Coming Issues
Wherever armed conflict has taken place in the last century, nearby oceans are often littered with explosives, says Vedenin. Many millions of tonnes of explosive material rest in our marine environments.
The sites of these explosives are poorly documented, partially because of national borders, restricted armed forces records and the reality that documents are stored in old files. They create an detonation and safety hazard, as well as danger from the continuous leakage of hazardous substances.
As the German government and other countries start clearing these relics, scientists aim to safeguard the marine communities that have formed nearby. In the Bay of Lübeck explosives are currently being cleared.
Researchers recommend substitute these steel remains left from weapons with certain more secure, some harmless objects, like perhaps man-made habitats, suggests Vedenin.
He currently hopes that what transpires in Lübeck creates a precedent for substituting material after munitions removal in other locations – because even the most harmful armaments can become framework for new life.