World War II Munitions, Torpedoes and Naval Mines: How Marine Life Flourishes on Discarded Weapons

In the brackish sea off the German shoreline lies a graveyard of World War II explosives, torpedoes and naval mines. Dumped from vessels at the conclusion of the second world war and forgotten about, thousands munitions have become matted together over the years. They create a decaying carpet on the low-depth, silty ocean floor of the Lübeck Bay in the western part of the Baltic Sea.

Over the years, the wartime weapons was overlooked and neglected. A increasing amount of tourists flocked to the coastal areas and calm waters for water sports, kite surfing and amusement parks. Beneath the surface, the munitions eroded.

Some of us expected to see a lifeless zone, with no organisms because it was all contaminated, says the lead researcher.

When the first scientists went searching to see what they were affecting to the ecosystem, the team anticipated finding a desert, with no life because it was all contaminated, states a scientist.

What they found astonished them. Vedenin remembers his colleagues shouting with surprise when the underwater vehicle first transmitted footage. That moment was a remarkable experience, he notes.

Numerous of marine animals had settled among the munitions, forming a revitalized marine community richer than the seabed around it.

This marine city was evidence to the tenacity of life. It is actually surprising how much marine organisms we discover in places that are supposed to be toxic and risky, he says.

More than 40 starfish had clustered on to one accessible chunk of TNT. They were residing on iron containers, detonator compartments and carrying containers just a short distance from its volatile core. Fish, crabs, sea anemones and mussels were all discovered on the old munitions. It resembles a marine reef in terms of the quantity of creatures that was there, says Vedenin.

Remarkable Population Density

An average of more than 40,000 animals were residing on every square metre of the weapons, scientists reported in their paper on the discovery. The adjacent region was much poorer in life, with only 8,000 organisms on every square metre.

It is paradoxical that items that are intended to eliminate everything are hosting so much life, states Vedenin. One can observe how nature adjusts after a devastating occurrence such as the second world war and how, in certain respects, life establishes itself to the most dangerous areas.

Man-made Structures as Ocean Environments

Artificial structures such as shipwrecks, offshore windfarms, oil rigs and undersea pipes can provide alternatives, restoring some of the destroyed habitat. This investigation demonstrates that weapons could be equally advantageous – the proliferation of life on those in the Bay of Lübeck is probable to be repeated in different areas.

Between 1946 and 1948, 1.6m tons of weapons were dumped off the Germany's coast. Thousands of individuals loaded them in barges; a portion were deposited in specific locations, others just discarded at sea while traveling. This is the initial instance experts have documented how marine life has reacted.

Worldwide Instances of Ocean Adaptation

• In the United States, decommissioned energy installations have transformed into coral reefs
• Sunken ships from the World War I have become homes for marine life along the Potomac in Maryland
• Military vehicle parts that have become home to reef-building organisms off Asan in the Pacific island

These areas become even more crucial for organisms as the seas are increasingly depleted by fishing, seafloor dredging and boat mooring. Shipwrecks and explosive disposal locations effectively function as protected areas – they are not official reserves, but almost any kind of anthropogenic disturbance is banned, says Vedenin. Consequently a lot of species that are usually scarce or declining, such as the Baltic cod, are prospering.

Coming Considerations

Anywhere military conflict has taken place in the recent history, surrounding seas are usually littered with munitions, says Vedenin. Millions of tonnes of dangerous substances rest in our oceans.

The locations of these explosives are insufficiently recorded, partly because of international boundaries, secret defense data and the situation that documents are buried in old files. They pose an detonation and safety risk, as well as risk from the ongoing emission of hazardous substances.

As the German government and different states embark on clearing these relics, experts plan to protect the ecosystems that have established nearby. In the Bay of Lübeck munitions are presently being extracted.

Researchers recommend substitute these metal carcasses remaining from weapons with some more secure, various harmless materials, like maybe man-made habitats, suggests Vedenin.

He presently wishes that what transpires in the Bay of Lübeck establishes a model for replacing habitats after weapon clearance in different areas – because including the most damaging weaponry can become foundation for new life.