Nazi Bombs, Torpedoes and Naval Mines: How Ocean Creatures Flourishes on Abandoned Weapons

In the slightly salty sea off the Germany's shoreline lies a wasteland of Nazi bombs, torpedo heads and mines. Dumped from boats at the end of the World War II and neglected, countless weapons have become matted together over the years. They comprise a rusting layer on the low-depth, silty ocean floor of the Lübeck Bay in the western part of the Baltic Sea.

Over the decades, the Nazi arsenal was ignored and forgotten about. A increasing amount of tourists traveled to the coastal areas and calm waters for jetskiing, kiteboarding and amusement parks. Beneath the surface, the munitions decayed.

Researchers anticipated to see a barren area, with no organisms because it was all toxic, says a scientist.

When the initial researchers went investigating to see what they were affecting to the ecosystem, the team expected to see a barren area, with no life because it was all toxic, explains the lead researcher.

What they discovered surprised them. Vedenin recalls his team members exclaiming in amazement when the underwater vehicle first sent the images back. That moment was a great moment, he says.

Countless of marine animals had made their homes amid the explosives, creating a revitalized ecosystem denser than the ocean bottom surrounding it.

This marine city was testament to the tenacity of life. Indeed surprising how much life we discover in places that are considered dangerous and dangerous, he explains.

Over 40 sea stars had piled on to one accessible fragment of TNT. They were living on steel casings, detonator compartments and storage boxes just a short distance from its dangerous content. Marine fish, crabs, anemones and mussels were all found on the historic weapons. You could compare it with a reef ecosystem in terms of the quantity of fauna that was present, says Vedenin.

Surprising Population Density

An average of more than 40,000 animals were living on every square metre of the weapons, researchers reported in their research on the discovery. The nearby seabed was much less diverse, with only 8,000 creatures on every meter squared.

It is paradoxical that objects that are designed to destroy all life 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 some way, life establishes itself to the most hazardous areas.

Man-made Structures as Marine Environments

Man-made features such as shipwrecks, offshore windfarms, drilling platforms and pipelines can offer substitutes, replacing some of the removed habitat. This investigation shows that munitions could be similarly advantageous – the explosion of life on those in the Lübeck Bay is expected to be duplicated in different areas.

Between 1946 and the post-war period, 1.6m tonnes of arms were dumped off the Germany's shoreline. Thousands of individuals loaded them in barges; a portion were placed in designated sites, the remainder just discarded at sea while traveling. This is the first time researchers have studied how marine life has reacted.

Worldwide Instances of Ocean Adaptation

• In the United States, decommissioned drilling platforms have transformed into coral reefs
• Submerged vessels from the World War I have become environments for marine life along the Potomac River in the state of Maryland
• Tank tracks that have become home to coral off Asan beach in the Pacific island

These locations become even more valuable for marine life as the seas are increasingly stripped by fishing, seafloor dredging and boat mooring. Shipwrecks and munitions areas essentially serve as refuges – they are not national parks, but almost any kind of human activity is restricted, says Vedenin. Therefore a lot of marine species that are usually scarce or diminishing, such as the Baltic cod, are prospering.

Coming Issues

Anywhere warfare has occurred in the last century, surrounding seas are usually littered with munitions, states Vedenin. Many millions of tonnes of explosive material remain in our seas.

The sites of these weapons are poorly mapped, in part because of international boundaries, restricted defense data and the reality that documents are stored in historic archives. They create an explosion and safety hazard, as well as threat from the ongoing leakage of poisonous compounds.

As Germany and different states begin extracting these artifacts, experts plan to protect the habitats that have formed around them. In the Bay of Lübeck munitions are presently being extracted.

Researchers recommend replace these metal carcasses originating from weapons with some safer, various safe objects, like maybe artificial reefs, suggests Vedenin.

He presently aspires that what occurs in the Bay of Lübeck creates a precedent for replacing material after explosive extraction in different areas – because including the most damaging explosives can become foundation for ocean ecosystems.