World War II Munitions, Torpedo Heads and Naval Mines: How Ocean Creatures Prosper on Dumped Weapons
In the slightly salty waters off the Germany's shoreline rests a graveyard of World War II explosives, torpedo heads and naval mines. Thrown off barges at the conclusion of the second world war and forgotten about, thousands explosives have accumulated over the years. They comprise a decaying layer on the shallow, silty ocean floor of the Bay of Lübeck in the western tip of the Baltic Sea.
Over the decades, the wartime weapons was overlooked and neglected. A increasing amount of visitors came to the sandy beaches and tranquil sea for jetskiing, kiteboarding and amusement parks. Underwater, the munitions eroded.
We initially expected to see a lifeless zone, with no life because it was all toxic, states a scientist.
When the initial researchers went investigating to see what they were doing to the ecosystem, some of us thought they would find a barren area, with no organisms because it was all toxic, states Andrey Vedenin.
What they observed surprised them. Vedenin recounts his scientists exclaiming in amazement when the ROV first transmitted footage. This was a remarkable experience, he notes.
Thousands of ocean life had settled amid the munitions, forming a renewed habitat more populous than the seabed surrounding it.
This underwater metropolis was proof to the persistence of life. Truly remarkable how much life we observe in places that are expected to be dangerous and dangerous, he says.
In excess of 40 starfish had gathered on to one visible piece of explosive material. They were residing on iron containers, fuse pockets and carrying containers just centimetres from its explosive filling. Fish, crustaceans, sea anemones and bivalves were all found on the old munitions. It resembles a reef ecosystem in terms of the amount of animal life that was present, states Vedenin.
Surprising Population Density
An average of more than 40,000 creatures were living on every square metre of the weapons, experts wrote in their research on the discovery. The adjacent region was much sparser, with only eight thousand individuals on every square metre.
It is ironic that objects that are meant to destroy all life are attracting so much marine organisms, states Vedenin. It's evident how nature adapts after a major disaster such as the World War II and how, in some way, marine life finds its way to the most dangerous locations.
Man-made Features as Ocean Habitats
Man-made features such as shipwrecks, offshore windfarms, oil rigs and undersea pipes can offer replacements, restoring some of the lost habitat. This research reveals that explosives could be comparably beneficial – the explosion of life on those in the Lübeck Bay is expected to be repeated elsewhere.
Between the late 1940s and 1948, 1.6m tons of arms were disposed of off the Germany's shoreline. Thousands of workers transported them in boats; some were placed in allocated sites, the remainder just discarded at sea during transport. This is the initial instance scientists have studied how ocean organisms has responded.
Worldwide Examples of Marine Transformation
- In the United States, decommissioned energy installations have become coral reefs
- Sunken ships from the World War I have become homes for marine life along the Potomac River in the state of Maryland
- Tank tracks that have become home to reef-building organisms off Asan in the Pacific island
These locations become even more valuable for wildlife as the marine environments are increasingly depleted by commercial fishing, seafloor dredging and boat mooring. Shipwrecks and weapons dump sites effectively serve as protected areas – they are not official reserves, but almost any kind of human activity is prohibited, explains Vedenin. Consequently a lot of species that are otherwise scarce or decreasing, such as the cod fish, are thriving.
Future Issues
Anywhere warfare has occurred in the recent history, surrounding seas are usually containing weapons, explains Vedenin. Many millions of tonnes of dangerous substances remain in our oceans.
The sites of these weapons are poorly mapped, partly because of sovereign limits, restricted military information and the situation that documents are buried in historic archives. They present an detonation and security danger, as well as threat from the ongoing leakage of toxic chemicals.
As the German government and additional nations embark on removing these remains, researchers plan to safeguard the ecosystems that have formed in their vicinity. In the Lübeck Bay weapons are currently being removed.
It would be wise to substitute these steel remains remaining from weapons with certain safer, various harmless structures, like possibly concrete structures, states Vedenin.
He currently wishes that what transpires in the Bay of Lübeck establishes a model for substituting material after munitions removal in different areas – because also the most destructive armaments can become foundation for new life.
