Nazi Munitions, Torpedoes and Mines: The Way Marine Life Flourishes on Abandoned Weapons
In the brackish waters off the Germany's shoreline rests a graveyard of Nazi bombs, torpedo heads and mines. Thrown off vessels at the end of the World War II and left behind, countless munitions have accumulated over the years. They create a rusting blanket on the low-depth, muddy ocean floor of the LĂźbeck Bay in the western tip of the Baltic.
Over the decades, the explosive stockpile was overlooked and neglected. A increasing amount of visitors flocked to the sandy beaches and tranquil sea for water sports, kite surfing and amusement parks. Below the waves, the weapons eroded.
Some of us thought to see a desert, with no organisms because it was all poisoned, explains Andrey Vedenin.
When the team went searching to see what they were affecting to the marine environment, some of us expected to see a barren area, with no organisms because it was all poisoned, says a scientist.
What they found surprised them. Vedenin recounts his team members exclaiming in amazement when the underwater vehicle first sent the images back. It was a great moment, he recalls.
Countless of ocean life had made their homes among the munitions, forming a regenerated habitat more populous than the seabed surrounding it.
This underwater metropolis was evidence to the resilience of life. Truly astonishing how much marine organisms we observe in areas that are expected to be toxic and dangerous, he explains.
More than 40 starfish had gathered on to one accessible fragment of explosive material. They were dwelling on steel casings, ignition chambers and carrying containers just centimetres from its explosive filling. Marine fish, crustaceans, anemones and bivalves were all found on the old munitions. It's similar to a reef ecosystem in terms of the quantity of fauna that was there, says Vedenin.
Surprising Creature Concentration
An mean of more than 40,000 creatures were residing on every square metre of the weapons, experts documented in their study on the observation. The surrounding area was much sparser, with only eight thousand organisms on every meter squared.
It is surprising that things that are intended to destroy everything are drawing so much life, states Vedenin. It's evident how the natural world evolves after a devastating occurrence such as the second world war and how, in some way, marine life returns to the most risky places.
Artificial Features as Ocean Habitats
Artificial structures such as sunken vessels, offshore windfarms, drilling platforms and pipelines can offer replacements, restoring some of the destroyed marine environment. This research shows that explosives could be equally advantageous â the proliferation of life on those in the LĂźbeck Bay is expected to be found elsewhere.
Between 1946 and the post-war period, 1.6m tons of munitions were dumped off the Germany's shoreline. Numerous of people loaded them in barges; a portion were dropped in designated areas, others just dumped during transport. This is the first time scientists have documented how marine life has adapted.
Worldwide Examples of Marine Adaptation
- In the United States, decommissioned oil and gas structures have transformed into marine habitats
- Sunken ships from the first world war have become environments for creatures along the Potomac River in Maryland
- Tank tracks that have become habitat to reef-building organisms off Asan in the Pacific island
These locations become even more valuable for marine life as the seas are increasingly denuded by commercial fishing, bottom trawling and anchoring. Shipwrecks and munitions areas essentially function as protected areas â they are not national parks, but virtually any kind of anthropogenic disturbance is prohibited, says Vedenin. As a result a lot of organisms that are otherwise rare or declining, such as the cod fish, are prospering.
Coming Issues
Anywhere armed conflict has taken place in the recent history, nearby oceans are often strewn with explosives, explains Vedenin. Millions of tons of volatile compounds rest in our marine environments.
The sites of these weapons are inadequately recorded, partly because of international boundaries, restricted military information and the situation that archives are stored in old files. They present an explosion and security hazard, as well as danger from the persistent emission of hazardous substances.
As the German government and different states start removing these remains, scientists aim to preserve the habitats that have formed nearby. In the LĂźbeck Bay munitions are presently being removed.
It would be wise to substitute these metal carcasses originating from weapons with some more secure, various non-dangerous materials, like possibly artificial reefs, suggests Vedenin.
He now hopes that what transpires in LĂźbeck sets a model for substituting material after explosive extraction in other locations â because including the most harmful armaments can become foundation for marine organisms.
