Nazi Explosives, Torpedo Heads and Mines: The Way Marine Life Flourishes on Discarded Weapons

In the slightly salty waters off the German coast rests a collection of Nazi bombs, torpedo heads and mines. Dumped from vessels at the end of the World War II and left behind, numerous explosives have become matted together over the years. They form a decaying blanket on the shallow, silty ocean floor of the Lübeck Bay in the western part of the Baltic Sea.

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 entertainment venues. Underwater, the weapons eroded.

Some of us thought to see a desert, with no life because it was all toxic, says a scientist.

When the first scientists went searching to see what they were affecting to the marine environment, some of us thought they would find a lifeless zone, with no organisms because it was all toxic, states the lead researcher.

What they discovered astonished them. Vedenin recounts his scientists reacting with shock when the underwater vehicle first sent the images back. That moment was a memorable occasion, he notes.

Countless of ocean life had made their homes on the explosives, creating a renewed marine community more populous than the ocean bottom nearby.

This ocean community was testament to the tenacity of life. Truly remarkable how much marine organisms we discover in locations that are supposed to be hazardous and dangerous, he states.

In excess of 40 starfish had clustered on to one visible chunk of TNT. They were dwelling on metal shells, fuse pockets and carrying containers just a short distance from its explosive filling. Marine fish, crustaceans, sea anemones and bivalves were all observed on the historic weapons. You could compare it with a reef ecosystem in terms of the abundance of fauna that was there, states Vedenin.

Unexpected Creature Concentration

An mean of more than forty thousand organisms were living on every square metre of the explosives, experts documented in their paper on the discovery. The nearby seabed was much sparser, with only eight thousand organisms on every square metre.

It is surprising that items that are designed to kill everything are drawing so much life, says Vedenin. You can see how the natural world adjusts after a major disaster 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

Man-made constructions such as shipwrecks, wind turbines, oil rigs and pipelines can create alternatives, restoring some of the lost marine environment. This study demonstrates that explosives could be similarly advantageous – the bloom of marine organisms on those in the Lübeck Bay is likely to be repeated in different areas.

Between the late 1940s and 1948, 1.6 million tonnes of arms were dumped off the German coast. Countless of individuals loaded them in boats; a portion were deposited in allocated locations, the remainder just thrown overboard en route. This is the initial instance researchers have documented how marine life has adapted.

Global Examples of Marine Adaptation

• In the US, retired energy installations have become coral reefs
• Shipwrecks from the first world war have become environments for wildlife along the Potomac River in Maryland
• Tank tracks that have become home to reef-building organisms off Asan beach in the Pacific island

These areas become even more important for marine life as the marine environments are increasingly stripped by commercial fishing, bottom trawling and boat mooring. Sunken ships and explosive disposal locations effectively serve as sanctuaries – they are not national parks, but nearly any kind of human activity is restricted, says Vedenin. Consequently a numerous of organisms that are otherwise uncommon or decreasing, such as the Baltic cod, are flourishing.

Future Considerations

Anywhere warfare has happened in the recent history, surrounding seas are typically littered with explosives, states Vedenin. Many millions of tons of explosive material rest in our marine environments.

The locations of these weapons are inadequately mapped, partly because of international boundaries, classified military information and the reality that records are hidden in historical records. They pose an explosion and safety danger, as well as danger from the continuous release of poisonous compounds.

As Germany and additional nations embark on clearing these artifacts, scientists aim to protect the habitats that have formed around them. In the Lübeck Bay explosives are already being extracted.

Researchers recommend replace these metal carcasses originating from weapons with some more secure, various non-dangerous objects, like perhaps man-made habitats, says Vedenin.

He now wishes that what happens in the Bay of Lübeck establishes a example for replacing habitats after explosive extraction elsewhere – because including the most harmful explosives can become framework for marine organisms.