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

In the slightly salty sea off the German coast rests a graveyard of World War II explosives, torpedo heads and mines. Thrown off barges at the end of the second world war and left behind, thousands weapons have accumulated over the decades. They comprise a rusting blanket on the shallow, silty ocean floor of the Lübeck Bay in the western part of the Baltic.

Over the decades, the Nazi arsenal was ignored and forgotten about. A growing number of visitors flocked to the coastal areas and calm waters for jetskiing, kite surfing and entertainment venues. Beneath the surface, the weapons eroded.

We initially thought to see a barren area, with nothing living there because it was all toxic, states a scientist.

When the team went searching to see what they were affecting to the ecosystem, some of us expected to see a barren area, with no organisms because it was all poisoned, states a scientist.

What they found astonished them. Vedenin remembers his team members exclaiming in amazement when the submersible first transmitted footage. That moment was a memorable occasion, he recalls.

Numerous of sea creatures had made their homes amid the explosives, developing a renewed marine community denser than the seabed nearby.

This ocean community was proof to the persistence of life. It is actually astonishing how much life we observe in locations that are considered hazardous and harmful, he says.

In excess of 40 starfish had gathered on to one visible chunk of TNT. They were dwelling on iron containers, fuse pockets and transport cases just centimetres from its explosive filling. Marine fish, crustaceans, sea anemones and mussels were all found on the discarded explosives. It's similar to a marine reef in terms of the quantity of fauna that was inhabiting the area, says Vedenin.

Remarkable Population Density

An average of more than 40,000 animals were dwelling on every square metre of the explosives, researchers reported in their research on the observation. The nearby seabed was much less diverse, with only 8,000 individuals on every square metre.

It is surprising that objects that are designed to destroy everything are drawing so much marine organisms, says Vedenin. You can see how nature evolves after a major disaster such as the second world war and how, in some way, life returns to the most dangerous places.

Man-made Structures as Ocean Habitats

Man-made constructions such as shipwrecks, offshore windfarms, drilling platforms and pipelines can create replacements, replacing some of the removed habitat. This investigation shows that explosives could be comparably beneficial – the proliferation of life on those in the Lübeck Bay is probable to be found elsewhere.

Between the late 1940s and the post-war period, 1.6m tonnes of arms were discarded off the Germany's coast. Numerous of people placed them in boats; some were dropped in allocated sites, the remainder just discarded at sea while traveling. This is the initial instance experts have documented how marine life has reacted.

Global Examples of Marine Transformation

• In the United States, retired oil and gas structures have turned into coral reefs
• Shipwrecks from the first world war have become habitats for creatures along the Potomac in Maryland
• Tank tracks that have become home to coral off Asan in Guam

These places become even more valuable for wildlife as the oceans are increasingly stripped by commercial fishing, bottom trawling and boat mooring. Sunken ships and explosive disposal locations essentially act as refuges – they are not national parks, but nearly any kind of anthropogenic disturbance is restricted, explains Vedenin. Consequently a numerous of marine species that are otherwise rare or diminishing, such as the cod fish, are prospering.

Coming Factors

Anywhere warfare has taken place in the recent history, adjacent waters are usually littered with explosives, says Vedenin. Many millions of tons of volatile compounds lie in our marine environments.

The sites of these munitions are inadequately documented, in part because of international boundaries, secret military information and the reality that archives are stored in historic archives. They create an explosion and safety danger, as well as risk from the ongoing release of hazardous substances.

As Germany and other countries embark on clearing these artifacts, scientists aim to protect the habitats that have established around them. In the Lübeck Bay munitions are presently being removed.

Researchers recommend substitute these metal carcasses originating from munitions with some less dangerous, various safe structures, like possibly man-made habitats, says Vedenin.

He presently wishes that what occurs in the Bay of Lübeck establishes a example for replacing habitats after explosive extraction elsewhere – because including the most damaging explosives can become framework for new life.