World War II Bombs, Torpedo Heads and Naval Mines: The Way Marine Life Flourishes on Dumped Weapons
In the brackish waters off the Germany's coast sits a collection of World War II explosives, torpedo heads and mines. Discarded from vessels at the end of the World War II and forgotten about, countless munitions have fused into clusters over the years. They comprise a decaying layer on the low-depth, muddy ocean floor of the Bay of Lübeck in the western part of the Baltic.
Over the years, the Nazi arsenal was ignored and forgotten about. A increasing amount of visitors flocked to the coastal areas and tranquil sea for water sports, kiteboarding and entertainment venues. Beneath the surface, the munitions decayed.
We initially anticipated to see a barren area, with nothing living there because it was all toxic, explains the lead researcher.
When the team went looking to see what they were affecting to the ecosystem, the team expected to see a lifeless zone, with nothing living there because it was all contaminated, states a scientist.
What they observed amazed them. Vedenin recounts his scientists exclaiming in amazement when the ROV first relayed pictures. This was a memorable occasion, he recalls.
Thousands of sea creatures had settled amid the weapons, creating a revitalized habitat more populous than the sea floor surrounding it.
This marine city was evidence to the persistence of life. Indeed astonishing how much marine organisms we find in places that are supposed to be toxic and dangerous, he states.
In excess of 40 sea stars had clustered on to one visible chunk of TNT. They were residing on steel casings, ignition chambers and transport cases just a short distance from its volatile core. Fish, crustaceans, sea anemones and bivalves were all discovered on the historic weapons. It's similar to a coral reef in terms of the abundance of creatures that was there, states Vedenin.
Unexpected Population Density
An average of more than forty thousand animals were living on every square metre of the explosives, scientists wrote in their research on the observation. The nearby seabed was much sparser, with only 8,000 creatures on every meter squared.
It is surprising that things that are designed to eliminate everything are attracting so much life, states Vedenin. It's evident how nature adapts after a catastrophic event such as the World War II and how, in some way, marine life establishes itself to the most hazardous places.
Man-made Structures as Marine Habitats
Artificial features such as sunken vessels, offshore windfarms, oil rigs and undersea pipes can provide replacements, compensating for some of the lost habitat. This research demonstrates that explosives could be equally positive – the proliferation of marine organisms on those in the Bay of Lübeck is likely to be duplicated in different areas.
Between 1946 and 1948, 1.6 million tonnes of munitions were discarded off the Germany's coast. Countless of workers placed them in barges; some were placed in allocated areas, the remainder just dumped during transport. This is the first time researchers have recorded how marine life has responded.
Global Instances of Marine Transformation
- In the US, retired energy installations have transformed into reef ecosystems
- Sunken ships from the first world war have become habitats for wildlife along the Potomac River in Maryland
- Tank tracks that have become environment to reef-building organisms off Asan beach in the Pacific island
These areas become even more crucial for marine life as the seas are increasingly stripped by fishing, seafloor dredging and boat mooring. Shipwrecks and weapons dump sites effectively serve as refuges – they are not national parks, but almost any kind of human activity is prohibited, says Vedenin. Consequently a many of marine species that are otherwise uncommon or declining, such as the Baltic cod, are prospering.
Future Considerations
Wherever military conflict has taken place in the recent history, surrounding seas are usually littered with explosives, says Vedenin. Millions of tons of volatile compounds lie in our seas.
The sites of these weapons are poorly recorded, partially because of sovereign limits, restricted armed forces records and the reality that archives are stored in old files. They pose an detonation and security risk, as well as danger from the continuous leakage of poisonous compounds.
As the German government and additional nations begin removing these remains, scientists hope to preserve the marine communities that have developed nearby. In the Lübeck Bay explosives are currently being extracted.
Researchers recommend replace these iron structures originating from munitions with certain more secure, some safe structures, like perhaps concrete structures, says Vedenin.
He now hopes that what happens in the Bay of Lübeck creates a model for replacing material after weapon clearance in different areas – because even the most destructive explosives can become foundation for marine organisms.
