Nazi Munitions, Torpedoes and Naval Mines: How Ocean Creatures Thrives on Discarded Armaments

In the slightly salty waters off the Germany's coast sits a wasteland of World War II explosives, torpedo heads and mines. Discarded from barges at the conclusion of the World War II and forgotten about, numerous explosives have fused into clusters over the years. They create a decaying layer on the low-depth, muddy seafloor of the Bay of Lübeck in the western tip of the Baltic.

Over the decades, the wartime weapons was ignored and forgotten about. A growing number of visitors came to the coastal areas and calm waters for jetskiing, kiteboarding and amusement parks. Below the waves, the munitions eroded.

We initially anticipated to see a desert, with nothing living there because it was all toxic, explains the lead researcher.

When the team went looking to see what they were doing to the marine environment, the team thought they would find a barren area, with nothing living there because it was all toxic, says Andrey Vedenin.

What they discovered astonished them. Vedenin remembers his team members exclaiming in amazement when the ROV first transmitted footage. This was a memorable occasion, he says.

Numerous of ocean life had established habitats amid the explosives, forming a revitalized habitat more populous than the ocean bottom around it.

This underwater metropolis was proof to the resilience of marine life. It is actually astonishing how much life we discover in locations that are expected to be dangerous and harmful, he explains.

Over 40 starfish had gathered on to one exposed piece of explosive material. They were dwelling on steel casings, ignition chambers and transport cases just centimetres from its explosive filling. Fish, crabs, sea anemones and mussels were all found on the old munitions. You could compare it with a marine reef in terms of the quantity of creatures that was present, states Vedenin.

Remarkable Creature Concentration

An mean of more than 40,000 animals were residing on every meter squared of the weapons, scientists reported in their research on the discovery. The nearby seabed was much sparser, with only eight thousand individuals on every square metre.

It is surprising that things that are meant to kill everything are hosting so much life, explains Vedenin. It's evident how the natural world evolves after a devastating occurrence such as the World War II and how, in some way, life establishes itself to the most risky places.

Artificial Features as Ocean Environments

Artificial features such as shipwrecks, wind turbines, oil rigs and undersea pipes can create substitutes, restoring some of the removed marine environment. This investigation demonstrates that weapons could be similarly beneficial – the explosion of life on those in the Lübeck Bay is expected to be repeated elsewhere.

Between 1946 and 1948, 1.6m tonnes of arms were discarded off the German coast. Numerous of individuals transported them in barges; some were deposited in designated areas, the remainder just dumped during transport. This is the initial instance scientists have documented how marine life has reacted.

Worldwide Examples of Ocean Transformation

• In the US, decommissioned energy installations have turned into marine habitats
• Submerged vessels from the first world war have become environments for creatures along the Potomac River in the state of Maryland
• Tank tracks that have become environment to reef-building organisms off Asan beach in Guam

These locations become even more crucial for wildlife as the oceans are increasingly denuded by commercial fishing, seafloor dredging and anchoring. Shipwrecks and weapons dump sites practically function as sanctuaries – they are not official reserves, but nearly any kind of human activity is banned, states Vedenin. Consequently a lot of organisms that are typically uncommon or decreasing, such as the cod fish, are prospering.

Coming Issues

Anywhere armed conflict has occurred in the recent history, adjacent waters are usually littered with explosives, says Vedenin. Millions of tons of explosive material remain in our oceans.

The locations of these explosives are insufficiently recorded, partly because of international boundaries, restricted defense data and the reality that archives are buried in old files. They create an explosion and security hazard, as well as danger from the continuous leakage of poisonous compounds.

As Germany and additional nations embark on removing these remains, scientists plan to safeguard the habitats that have formed nearby. In the Bay of Lübeck explosives are currently being removed.

We should replace these metal carcasses remaining from munitions with certain more secure, some safe structures, like possibly concrete structures, suggests Vedenin.

He presently hopes that what transpires in Lübeck sets a precedent for replacing structures after weapon clearance elsewhere – because even the most destructive explosives can become framework for marine organisms.