World War II Bombs, Torpedoes and Mines: The Way Ocean Creatures Prosper on Abandoned Armaments

In the slightly salty waters off the Germany's shoreline sits a graveyard of World War II explosives, torpedoes and naval mines. Thrown off vessels at the conclusion of the second world war and left behind, countless munitions have become matted together over the years. They create a corroding carpet on the shallow, silty seafloor of the Lübeck Bay in the western part of the Baltic Sea.

Over the decades, the wartime weapons was overlooked and neglected. A growing number of tourists flocked to the sandy beaches and tranquil sea for water sports, kiteboarding and amusement parks. Underwater, the weapons decayed.

Researchers expected to see a lifeless zone, with nothing living there because it was all contaminated, explains a scientist.

When the team went searching to see what they were doing to the ecosystem, some of us anticipated finding a lifeless zone, with no life because it was all contaminated, explains Andrey Vedenin.

What they found surprised them. Vedenin recalls his team members exclaiming in amazement when the ROV first transmitted footage. This was a memorable occasion, he notes.

Countless of marine animals had established habitats on the munitions, forming a regenerated ecosystem denser than the seabed nearby.

This marine city was evidence to the resilience of life. It is actually surprising how much life we discover in locations that are expected to be dangerous and dangerous, he says.

More than 40 starfish had gathered on to one accessible piece of TNT. They were dwelling on iron containers, ignition chambers and storage boxes just a short distance from its volatile core. Marine fish, crabs, anemones and bivalves were all observed on the discarded explosives. It's similar to a marine reef in terms of the quantity of animal life that was present, says Vedenin.

Surprising Creature Concentration

An mean of more than 40,000 organisms were living on every square metre of the explosives, scientists documented in their research on the discovery. The nearby seabed was much less diverse, with only 8,000 organisms on every square metre.

It is surprising that objects that are intended to kill all life are drawing so much life, says Vedenin. One can observe how the natural world adjusts after a major disaster such as the second world war and how, in certain respects, life establishes itself to the most hazardous areas.

Man-made Structures as Marine Habitats

Artificial constructions such as shipwrecks, offshore windfarms, oil rigs and undersea pipes can provide substitutes, restoring some of the lost marine environment. This investigation reveals that munitions could be comparably advantageous – the bloom of life on those in the Bay of Lübeck is likely to be found in other locations.

Between 1946 and the post-war period, 1.6 million tonnes of munitions were dumped off the Germany's coast. Thousands of people loaded them in vessels; a portion were deposited in specific locations, others just discarded at sea while traveling. This is the initial instance experts have recorded how ocean organisms has responded.

Worldwide Instances of Ocean Transformation

• In the United States, retired drilling platforms have become coral reefs
• Sunken ships from the World War I have become habitats for marine life along the Potomac River in the state of Maryland
• Military vehicle parts that have become environment to coral off Asan in Guam

These locations become even more valuable for wildlife as the oceans are increasingly denuded by commercial fishing, seafloor dredging and boat mooring. Sunken ships and munitions areas essentially act as sanctuaries – they are not official reserves, but nearly any kind of anthropogenic disturbance is banned, states Vedenin. Consequently a many of species that are otherwise scarce or diminishing, such as the cod fish, are prospering.

Coming Issues

Wherever military conflict has taken place in the past 100 years, nearby oceans are often containing munitions, states Vedenin. Many millions of tons of dangerous substances rest in our seas.

The sites of these weapons are insufficiently documented, partly because of national borders, secret military information and the reality that documents are buried in historic archives. They present an explosion and security danger, as well as danger from the persistent leakage of toxic chemicals.

As Germany and additional nations embark on clearing these relics, experts plan to preserve the ecosystems that have established in their vicinity. In the Bay of Lübeck munitions are presently being extracted.

It would be wise to replace these metal carcasses left from munitions with certain safer, some non-dangerous materials, like possibly man-made habitats, says Vedenin.

He now aspires that what happens in Lübeck creates a example for substituting material after munitions removal in other locations – because including the most harmful explosives can become framework for marine organisms.