Nazi Explosives, Torpedoes and Naval Mines: The Way Marine Life Flourishes on Dumped Armaments

In the brackish sea off the Germany's shoreline sits a collection of World War II explosives, torpedo heads and naval mines. Dumped from vessels at the conclusion of the World War II and left behind, thousands munitions have fused into clusters over the decades. They create a corroding layer on the low-depth, muddy seafloor of the Lübeck Bay in the western tip of the Baltic Sea.

Over the decades, the Nazi arsenal was overlooked and neglected. A increasing amount of tourists flocked to the sandy beaches and tranquil sea for jetskiing, kite surfing and amusement parks. Underwater, the munitions decayed.

Some of us anticipated to see a lifeless zone, with no life because it was all toxic, explains a scientist.

When the team went investigating to see what they were affecting to the ecosystem, researchers anticipated finding a lifeless zone, with nothing living there because it was all toxic, says Andrey Vedenin.

What they observed astonished them. Vedenin recalls his colleagues exclaiming in amazement when the ROV first sent the images back. That moment was a remarkable experience, he recalls.

Numerous of ocean life had established habitats amid the weapons, forming a revitalized marine community more populous than the sea floor around it.

This underwater metropolis was testament to the resilience of life. It is actually remarkable how much life we find in areas that are supposed to be hazardous and harmful, he explains.

Over 40 sea stars had gathered on to one visible fragment of TNT. They were dwelling on iron containers, fuse pockets and transport cases just a short distance from its volatile core. Marine fish, crabs, sea anemones and mussels were all discovered on the old munitions. You could compare it with a coral reef in terms of the quantity of fauna that was present, notes Vedenin.

Remarkable Population Density

An average of more than forty thousand animals were residing on every square metre of the weapons, scientists documented in their research on the observation. The nearby seabed was much poorer in life, with only eight thousand organisms on every square metre.

It is ironic that objects that are intended to destroy everything are hosting so much life, explains Vedenin. You can see how nature adapts after a major disaster such as the World War II and how, in some way, life returns to the most hazardous locations.

Artificial Features as Ocean Habitats

Man-made features such as shipwrecks, offshore windfarms, oil rigs and pipelines can offer substitutes, restoring some of the removed habitat. This research demonstrates that weapons could be similarly beneficial – the bloom of life on those in the Lübeck Bay is expected to be duplicated in other locations.

Between 1946 and the post-war period, 1.6m tons of weapons were disposed of off the Germany's coast. Thousands of people transported them in vessels; a portion were placed in allocated locations, others just thrown overboard en route. This is the initial instance researchers have documented how ocean organisms has reacted.

Global Instances of Marine Transformation

• In the United States, decommissioned oil and gas structures have transformed into marine habitats
• Sunken ships from the first world war have become habitats for marine life along the Potomac River in the state of Maryland
• Tank tracks that have become environment to coral off Asan in the Pacific island

These places become even more valuable for organisms as the oceans are increasingly stripped by commercial fishing, bottom trawling and boat mooring. Shipwrecks and munitions areas practically function as protected areas – they are not official reserves, but nearly any kind of human activity is restricted, explains Vedenin. As a result a lot of species that are otherwise uncommon or declining, such as the Baltic cod, are flourishing.

Future Factors

Anywhere warfare has taken place in the recent history, surrounding seas are often littered with explosives, states Vedenin. Many millions of tonnes of explosive material remain in our oceans.

The locations of these munitions are insufficiently mapped, partially because of sovereign limits, secret armed forces records and the situation that archives are hidden in historic archives. They create an explosion and safety hazard, as well as risk from the continuous release of hazardous substances.

As the German government and different states start removing these relics, experts plan to protect the habitats that have established nearby. In the Lübeck Bay weapons are presently being cleared.

We should replace these metal carcasses remaining from weapons with certain safer, some safe objects, like maybe artificial reefs, suggests Vedenin.

He presently hopes that what happens in Lübeck establishes a example for replacing habitats after munitions removal elsewhere – because even the most harmful explosives can become foundation for marine organisms.