Nazi Explosives, Torpedo Heads and Mines: The Way Ocean Creatures Prosper on Discarded Weapons

In the brackish sea off the German coast lies a collection of Nazi bombs, torpedoes and mines. Discarded from vessels at the conclusion of the World War II and forgotten about, thousands weapons have become matted together over the years. They create a corroding blanket on the shallow, muddy seafloor of the Bay of Lübeck in the western tip of the Baltic.

Over the years, the wartime weapons was overlooked and forgotten about. A increasing amount of visitors came to the coastal areas and tranquil sea for water sports, kiteboarding and amusement parks. Below the waves, the weapons eroded.

We initially expected 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, the team thought they would find a barren area, with nothing living there because it was all poisoned, states a scientist.

What they found surprised them. Vedenin recounts his team members shouting with surprise when the ROV first transmitted footage. It was a remarkable experience, he recalls.

Thousands of marine animals had made their homes amid the munitions, forming a renewed ecosystem richer than the seabed around it.

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

More than 40 starfish had clustered on to one exposed fragment of explosive material. They were residing on steel casings, fuse pockets and carrying containers just a short distance from its dangerous content. Marine fish, crabs, sea anemones and mussels were all discovered on the discarded explosives. It's similar to a marine reef in terms of the quantity of fauna that was present, states Vedenin.

Surprising Creature Concentration

An mean of more than 40,000 creatures were dwelling on every square metre of the explosives, experts wrote in their paper on the finding. The surrounding area was much sparser, with only eight thousand individuals on every square metre.

It is surprising that things that are intended to destroy all life are attracting so much life, says Vedenin. You can see how the natural world evolves after a major disaster such as the second world war and how, in certain respects, marine life finds its way to the most risky locations.

Man-made Features as Marine Environments

Artificial structures such as sunken vessels, wind turbines, drilling platforms and pipelines can create substitutes, restoring some of the removed habitat. This study demonstrates that munitions could be comparably beneficial – the bloom of marine organisms on those in the Lübeck Bay is likely to be repeated in other locations.

Between 1946 and 1948, 1.6m tons of munitions were discarded off the Germany's coast. Countless of individuals placed them in boats; a portion were placed in specific areas, the remainder just thrown overboard en route. This is the first time researchers have documented how marine life has adapted.

Worldwide Instances of Marine Transformation

• In the United States, retired drilling platforms have turned into marine habitats
• Submerged vessels from the World War I have become habitats for creatures along the Potomac in Maryland
• Military vehicle parts that have become habitat to coral off Asan beach in the Pacific island

These locations become even more crucial for marine life as the seas are increasingly depleted by fishing, bottom trawling and boat mooring. Sunken ships and munitions areas essentially function as protected areas – they are not official reserves, but virtually any kind of anthropogenic disturbance is banned, states Vedenin. Consequently a numerous of organisms that are usually uncommon or diminishing, such as the Baltic cod, are prospering.

Coming Factors

Anywhere military conflict has happened in the last century, nearby oceans are often containing munitions, says Vedenin. Millions of tons of dangerous substances rest in our seas.

The locations of these weapons are insufficiently mapped, in part because of sovereign limits, restricted defense data and the situation that records are buried in old files. They pose an detonation and safety hazard, as well as risk from the persistent release of hazardous substances.

As Germany and additional nations begin clearing these artifacts, experts hope to protect the ecosystems that have formed around them. In the Bay of Lübeck explosives are already being extracted.

We should replace these metal carcasses originating from weapons with certain safer, various harmless structures, like perhaps concrete structures, states Vedenin.

He presently aspires that what transpires in the Bay of Lübeck establishes a precedent for replacing habitats after munitions removal elsewhere – because including the most damaging weaponry can become scaffolding for new life.