World War II Bombs, Torpedo Heads and Mines: How Ocean Creatures Flourishes on Dumped Armaments

In the slightly salty sea off the German coast sits a graveyard of Nazi bombs, torpedoes and mines. Thrown off boats at the conclusion of the World War II and neglected, countless weapons have fused into clusters over the years. They form a corroding layer on the low-depth, muddy seafloor of the Lübeck Bay in the western tip of the Baltic.

Over the years, the Nazi arsenal was overlooked and neglected. A increasing amount of visitors traveled to the sandy beaches and tranquil sea for water sports, kiteboarding and entertainment venues. Underwater, the weapons deteriorated.

Researchers anticipated to see a lifeless zone, with no organisms because it was all toxic, explains a scientist.

When the team went looking to see what they were doing to the marine environment, the team expected to see a desert, with no life because it was all toxic, explains a scientist.

What they found amazed them. Vedenin remembers his team members shouting with surprise when the underwater vehicle first transmitted footage. This was a memorable occasion, he notes.

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

This ocean community was proof to the persistence of life. Indeed remarkable how much marine organisms we find in places that are considered hazardous and risky, he explains.

In excess of 40 starfish had clustered on to one accessible piece of explosive material. They were residing on iron containers, ignition chambers and transport cases just centimetres from its dangerous content. Fish, crustaceans, sea anemones and mussels were all discovered on the old munitions. You could compare it with a reef ecosystem in terms of the amount of animal life that was present, notes Vedenin.

Unexpected Population Density

An average of more than forty thousand creatures were living on every square metre of the munitions, scientists reported in their research on the finding. The nearby seabed was much less diverse, with only eight thousand organisms on every square metre.

It is ironic that items that are intended to eliminate all life are hosting so much life, says Vedenin. It's evident how the natural world evolves after a major disaster such as the World War II and how, in certain respects, marine life returns to the most risky locations.

Man-made Features as Marine Habitats

Man-made features such as sunken vessels, wind turbines, oil rigs and pipelines can offer alternatives, compensating for some of the removed marine environment. This investigation reveals that munitions could be similarly advantageous – the explosion of marine organisms on those in the Lübeck Bay is probable to be duplicated in other locations.

Between the late 1940s and 1948, 1.6 million tonnes of munitions were dumped off the German coast. Numerous of workers loaded them in barges; some were deposited in specific locations, others just discarded at sea during transport. This is the initial instance scientists have recorded how ocean organisms has reacted.

Worldwide Examples of Ocean Adaptation

• In the US, decommissioned drilling platforms have transformed into marine habitats
• Sunken ships from the World War I have become habitats for wildlife along the Potomac River in the state of Maryland
• Tank tracks that have become environment to reef-building organisms off Asan beach in the Pacific island

These places become even more valuable for marine life as the oceans are increasingly depleted by fishing, seafloor dredging and boat mooring. Sunken ships and munitions areas essentially function as refuges – they are not official reserves, but almost any kind of human activity is banned, states Vedenin. As a result a numerous of marine species that are otherwise uncommon or diminishing, such as the Baltic cod, are flourishing.

Future Factors

Anywhere warfare has taken place in the last century, adjacent waters are typically strewn with munitions, says Vedenin. Many millions of tons of explosive material remain in our seas.

The positions of these weapons are poorly documented, partially because of international boundaries, classified defense data and the fact that archives are hidden in historical records. They create an explosion and security hazard, as well as risk from the ongoing leakage of hazardous substances.

As Germany and other countries start removing these relics, scientists hope to preserve the ecosystems that have established in their vicinity. In the Bay of Lübeck explosives are currently being cleared.

We should substitute these iron structures left from munitions with certain more secure, various non-dangerous objects, like possibly artificial reefs, suggests Vedenin.

He presently hopes that what occurs in Lübeck establishes a example for replacing habitats after weapon clearance in different areas – because also the most harmful armaments can become foundation for new life.