World War II Explosives, Torpedo Heads and Naval Mines: The Way Marine Life Prosper on Discarded Armaments

In the brackish waters off the German shoreline sits a collection of World War II explosives, torpedoes and naval mines. Dumped from boats at the conclusion of the World War II and left behind, thousands weapons have fused into clusters over the years. They create a rusting carpet on the shallow, silty ocean floor of the Lübeck Bay in the western part of the Baltic.

Over the decades, the wartime weapons was ignored and forgotten about. A increasing amount of tourists flocked to the coastal areas and tranquil sea for jetskiing, kite surfing and entertainment venues. Below the waves, the weapons decayed.

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

When the team went looking to see what they were doing to the ecosystem, the team anticipated finding a desert, with no life because it was all poisoned, explains the lead researcher.

What they discovered surprised them. Vedenin recalls his colleagues reacting with shock when the ROV first relayed pictures. It was a remarkable experience, he says.

Thousands of sea creatures had settled among the explosives, developing a revitalized marine community denser than the seabed surrounding it.

This ocean community was evidence to the persistence of marine life. Indeed surprising how much life we find in locations that are considered dangerous and dangerous, he explains.

Over 40 sea stars had clustered on to one visible fragment of explosive material. They were dwelling on iron containers, fuse pockets and storage boxes just a short distance from its volatile core. Fish, crustaceans, anemones and mussels were all observed on the discarded explosives. You could compare it with a coral reef in terms of the amount of animal life that was there, notes Vedenin.

Unexpected Population Density

An mean of more than forty thousand organisms were residing on every square metre of the weapons, experts wrote in their study on the finding. The adjacent region was much poorer in life, with only eight thousand organisms on every square metre.

It is paradoxical that items that are intended to eliminate everything are attracting so much life, explains Vedenin. You can see how nature evolves after a devastating occurrence such as the World War II and how, in certain respects, life returns to the most dangerous places.

Man-made Structures as Ocean Environments

Artificial constructions such as shipwrecks, offshore windfarms, oil rigs and undersea pipes can offer replacements, replacing some of the lost habitat. This study demonstrates that explosives could be comparably advantageous – the bloom of marine organisms on those in the Lübeck Bay is likely to be found elsewhere.

Between the late 1940s and the post-war period, 1.6m tons of weapons were disposed of off the Germany's coast. Countless of individuals transported them in barges; a portion were placed in designated locations, others just thrown overboard en route. This is the initial instance scientists have documented how marine life has responded.

Worldwide Instances of Marine Adaptation

• In the US, decommissioned energy installations have become marine habitats
• Sunken ships from the first world war have become habitats for wildlife along the Potomac in the state of Maryland
• Military vehicle parts that have become habitat to coral off Asan beach in Guam

These places become even more valuable for organisms as the seas are increasingly stripped by commercial fishing, bottom trawling and anchoring. Shipwrecks and munitions areas practically serve as protected areas – they are not national parks, but almost any kind of human activity is prohibited, states Vedenin. Therefore a numerous of organisms that are otherwise rare or decreasing, such as the Baltic cod, are thriving.

Future Factors

Wherever warfare has taken place in the recent history, adjacent waters are usually littered with weapons, states Vedenin. Millions of tonnes of volatile compounds lie in our seas.

The positions of these munitions are poorly mapped, partially because of national borders, classified defense data and the fact that archives are stored in old files. They pose an explosion and security danger, as well as risk from the ongoing release of toxic chemicals.

As the German government and different states embark on extracting these relics, scientists aim to safeguard the habitats that have formed around them. In the Bay of Lübeck weapons are already being extracted.

Researchers recommend substitute these steel remains remaining from munitions with certain less dangerous, various non-dangerous structures, like perhaps artificial reefs, suggests Vedenin.

He currently aspires that what happens in Lübeck creates a example for substituting habitats after weapon clearance elsewhere – because including the most harmful explosives can become framework for marine organisms.