World War II Munitions, Torpedo Heads and Mines: The Way Ocean Creatures Thrives on Discarded Weapons
In the slightly salty sea off the Germany's shoreline rests a graveyard of Nazi bombs, torpedo heads and mines. Dumped from vessels at the conclusion of the second world war and neglected, countless munitions have accumulated over the years. They create a corroding carpet on the low-depth, muddy ocean floor of the Lübeck Bay in the western tip of the Baltic Sea.
Over the decades, the explosive stockpile was overlooked and forgotten about. A growing number of visitors flocked to the sandy beaches and calm waters for jetskiing, kiteboarding and entertainment venues. Beneath the surface, the munitions decayed.
Some of us thought to see a desert, with nothing living there because it was all contaminated, explains Andrey Vedenin.
When the initial researchers went searching to see what they were affecting to the marine environment, researchers expected to see a desert, with no life because it was all contaminated, explains Andrey Vedenin.
What they found amazed them. Vedenin recounts his scientists reacting with shock when the underwater vehicle first transmitted footage. It was a remarkable experience, he notes.
Numerous of sea creatures had established habitats amid the weapons, forming a revitalized habitat denser than the seabed surrounding it.
This ocean community was proof to the resilience of life. It is actually remarkable how much life we observe in areas that are considered dangerous and risky, he says.
More than 40 sea stars had clustered on to one accessible piece of explosive material. They were living on metal shells, ignition chambers and transport cases just a short distance from its dangerous content. Marine fish, crustaceans, sea anemones and bivalves were all discovered on the discarded explosives. You could compare it with a reef ecosystem in terms of the abundance of animal life that was there, says Vedenin.
Remarkable Creature Concentration
An average of more than forty thousand animals were dwelling on every meter squared of the weapons, scientists reported in their paper on the finding. The nearby seabed was much sparser, with only eight thousand individuals on every square metre.
It is surprising that items that are meant to kill all life are attracting so much life, says Vedenin. You can see how nature adjusts after a major disaster such as the World War II and how, in certain respects, life establishes itself to the most risky areas.
Man-made Features as Ocean Environments
Man-made constructions such as shipwrecks, offshore windfarms, oil rigs and pipelines can create replacements, restoring some of the destroyed marine environment. This study demonstrates that explosives could be equally advantageous – the proliferation of life on those in the Bay of Lübeck is probable to be found in different areas.
Between the late 1940s and 1948, 1.6m tons of arms were discarded off the Germany's shoreline. Numerous of workers placed them in barges; some were dropped in designated sites, others just thrown overboard while traveling. This is the first time scientists have recorded how ocean organisms has adapted.
Global Instances of Ocean Transformation
- In the US, retired oil and gas structures have transformed into coral reefs
- Submerged vessels from the World War I have become habitats for creatures along the Potomac River in the state of Maryland
- Tank tracks that have become environment to reef-building organisms off Asan in the Pacific island
These areas become even more valuable for organisms as the seas are increasingly depleted by fishing, seafloor dredging and anchoring. Shipwrecks and weapons dump sites effectively act as protected areas – they are not official reserves, but nearly any kind of human activity is restricted, says Vedenin. As a result a many of organisms that are typically scarce or diminishing, such as the Baltic cod, are flourishing.
Future Issues
Wherever military conflict has occurred in the recent history, surrounding seas are often strewn with munitions, says Vedenin. Millions of tonnes of volatile compounds lie in our seas.
The locations of these explosives are inadequately recorded, partly because of sovereign limits, restricted defense data and the reality that archives are hidden in historic archives. They create an explosion and safety hazard, as well as danger from the persistent leakage of toxic chemicals.
As the German government and additional nations begin clearing these artifacts, researchers aim to protect the marine communities that have developed in their vicinity. In the Lübeck Bay munitions are already being removed.
It would be wise to replace these steel remains originating from munitions with certain more secure, various harmless structures, like perhaps concrete structures, suggests Vedenin.
He currently wishes that what occurs in the Bay of Lübeck sets a precedent for replacing habitats after explosive extraction in different areas – because including the most destructive armaments can become scaffolding for marine organisms.