World War II Munitions, Torpedoes and Mines: The Way Ocean Creatures Flourishes on Discarded Armaments

In the brackish sea off the Germany's coast sits a wasteland of Nazi bombs, torpedoes and naval mines. Thrown off boats at the end of the second world war and neglected, thousands explosives have accumulated over the decades. They create a corroding blanket on the low-depth, muddy ocean floor of the Lübeck Bay in the western part of the Baltic Sea.

Over the decades, the explosive stockpile was overlooked and neglected. A increasing amount of visitors came to the sandy beaches and tranquil sea for jetskiing, kiteboarding and amusement parks. Beneath the surface, the weapons decayed.

We initially expected to see a lifeless zone, with no organisms because it was all toxic, states the lead researcher.

When the team went looking to see what they were affecting to the ecosystem, the team anticipated finding a lifeless zone, with no organisms because it was all poisoned, states Andrey Vedenin.

What they found surprised them. Vedenin recalls his team members shouting with surprise when the underwater vehicle first sent the images back. It was a remarkable experience, he says.

Countless of ocean life had established habitats among the munitions, creating a revitalized ecosystem more populous than the seabed surrounding it.

This marine city was testament to the persistence of life. Indeed surprising how much marine organisms we discover in areas that are considered dangerous and dangerous, he states.

More than 40 sea stars had piled on to one visible chunk of explosive material. They were living on steel casings, fuse pockets and transport cases just a short distance from its dangerous content. Fish, crustaceans, sea anemones and bivalves were all observed on the historic weapons. You could compare it with a marine reef in terms of the amount of creatures that was present, notes Vedenin.

Unexpected Population Density

An mean of more than forty thousand creatures were dwelling on every square metre of the munitions, scientists wrote in their study on the finding. The nearby seabed was much sparser, with only 8,000 individuals on every meter squared.

It is surprising that objects that are designed to eliminate all life are drawing so much life, explains Vedenin. It's evident how nature adapts after a devastating occurrence such as the second world war and how, in certain respects, life establishes itself to the most hazardous locations.

Man-made Features as Ocean Habitats

Artificial constructions such as sunken vessels, offshore windfarms, oil rigs and undersea pipes can create replacements, replacing some of the lost marine environment. This investigation shows that weapons could be equally positive – the bloom of life on those in the Lübeck Bay is probable to be duplicated in other locations.

Between the late 1940s and 1948, 1.6 million tons of munitions were disposed of off the German coast. Countless of individuals placed them in vessels; a portion were deposited in specific sites, others just thrown overboard during transport. This is the first time experts have recorded how marine life has adapted.

Worldwide Examples of Ocean Adaptation

• In the US, decommissioned energy installations have transformed into marine habitats
• Submerged vessels from the World War I have become environments for marine life along the Potomac River in the state of Maryland
• Military vehicle parts that have become home to reef-building organisms off Asan beach in Guam

These areas become even more crucial for marine life as the marine environments are increasingly stripped by fishing, bottom trawling and anchoring. Sunken ships and explosive disposal locations practically function as refuges – they are not national parks, but almost any kind of anthropogenic disturbance is prohibited, says Vedenin. Therefore a numerous of marine species that are usually scarce or diminishing, such as the cod fish, are flourishing.

Coming Considerations

Wherever military conflict has happened in the past 100 years, nearby oceans are often strewn with munitions, explains Vedenin. Millions of tons of explosive material remain in our oceans.

The locations of these munitions are inadequately documented, partially because of international boundaries, secret armed forces records and the situation that documents are stored in historic archives. They present an detonation and safety risk, as well as danger from the ongoing emission of hazardous substances.

As the German government and different states start clearing these remains, experts hope to protect the ecosystems that have established nearby. In the Lübeck Bay munitions are already being extracted.

It would be wise to replace these metal carcasses originating from weapons with certain safer, various non-dangerous structures, like perhaps artificial reefs, states Vedenin.

He presently hopes that what happens in the Bay of Lübeck sets a model for replacing structures after weapon clearance in different areas – because even the most damaging explosives can become framework for ocean ecosystems.