Nazi Munitions, Torpedo Heads and Naval Mines: The Way Ocean Creatures Thrives on Dumped Weapons

In the brackish waters off the German shoreline lies a collection of Nazi bombs, torpedo heads and mines. Thrown off barges at the conclusion of the second world war and left behind, countless munitions have become matted together over the decades. They comprise a decaying blanket on the low-depth, muddy seafloor of the Bay of Lübeck in the western tip of the Baltic Sea.

Over the years, the Nazi arsenal was ignored and forgotten about. A increasing amount of tourists traveled to the sandy beaches and tranquil sea for jetskiing, kiteboarding and amusement parks. Beneath the surface, the munitions deteriorated.

Researchers anticipated to see a desert, with no life because it was all contaminated, explains the lead researcher.

When the team went looking to see what they were doing to the ecosystem, the team anticipated finding a desert, with no life because it was all contaminated, states the lead researcher.

What they found astonished them. Vedenin remembers his scientists reacting with shock when the submersible first sent the images back. This was a memorable occasion, he says.

Thousands of sea creatures had made their homes among the weapons, developing a renewed ecosystem more populous than the seabed surrounding it.

This underwater metropolis was testament to the resilience of marine life. Indeed surprising how much marine organisms we find in areas that are expected to be toxic and dangerous, he explains.

In excess of 40 starfish had clustered on to one accessible fragment of explosive material. They were living on steel casings, detonator compartments and storage boxes just centimetres from its dangerous content. Fish, crustaceans, anemones and mussels were all observed on the discarded explosives. It resembles a coral reef in terms of the amount of fauna that was present, states Vedenin.

Unexpected Creature Concentration

An average of more than forty thousand animals were living on every square metre of the munitions, scientists wrote in their paper on the observation. The adjacent region was much less diverse, with only eight thousand organisms on every meter squared.

It is ironic that objects that are intended to eliminate all life are drawing so much life, says Vedenin. One can observe how nature evolves after a catastrophic event such as the World War II and how, in certain respects, marine life establishes itself to the most dangerous locations.

Artificial Structures as Ocean Environments

Artificial features such as sunken vessels, offshore windfarms, drilling platforms and undersea pipes can create replacements, replacing some of the removed marine environment. This research shows that explosives could be equally advantageous – the bloom of life on those in the Bay of Lübeck is probable to be repeated in different areas.

Between 1946 and 1948, 1.6m tonnes of munitions were disposed of off the German coast. Thousands of individuals transported them in barges; a portion were deposited in designated areas, others just dumped while traveling. This is the first time scientists have recorded how ocean organisms has adapted.

Global Instances of Ocean Adaptation

• In the United States, retired energy installations have become reef ecosystems
• Shipwrecks from the first world war have become homes for marine life along the Potomac in the state of Maryland
• Tank tracks that have become home to coral off Asan beach in the Pacific island

These places become even more crucial for organisms as the seas are increasingly denuded by commercial fishing, seafloor dredging and boat mooring. Shipwrecks and explosive disposal locations practically act as refuges – they are not official reserves, but virtually any kind of human activity is banned, explains Vedenin. As a result a numerous of organisms that are typically scarce or diminishing, such as the Baltic cod, are prospering.

Future Considerations

Anywhere armed conflict has happened in the past 100 years, nearby oceans are typically containing weapons, says Vedenin. Millions of tonnes of explosive material rest in our marine environments.

The positions of these weapons are insufficiently documented, partially because of sovereign limits, restricted military information and the fact that records are buried in historic archives. They create an detonation and safety danger, as well as threat from the continuous leakage of toxic chemicals.

As Germany and additional nations start removing these relics, scientists plan to protect the ecosystems that have established in their vicinity. In the Lübeck Bay munitions are presently being cleared.

It would be wise to substitute these iron structures originating from weapons with certain more secure, some safe objects, like possibly artificial reefs, says Vedenin.

He presently aspires that what happens in Lübeck establishes a example for substituting material after explosive extraction in other locations – because also the most damaging weaponry can become scaffolding for new life.