Beneath the shimmering waves of the tropical Pacific, about 5,000 meters off the Solomon Islands, an old World War II oil tanker lies in silence. Her name was USS Neosho, once a lifeline for the U.S. Navy fleet, carrying fuel to power its warships. Today, she is nothing more than a rusting hull, holding tens of thousands of liters of heavy oil—an underwater time bomb threatening the sea and everything that depends on it.
For more than 80 years, wrecks like the Neosho have remained as unfinished chapters of the war, scattered across the South Pacific—from Papua New Guinea to the Marshall Islands and Micronesia. Hundreds, even thousands, of them rest on the seafloor. Each one is a slow-leaking hazard: black oil seeping unseen, heavy metals from munitions, and toxic chemicals once designed to kill humans, now haunting coral reefs and small, unsuspecting fish.
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A Hidden Threat
A recent report from the International Union for Conservation of Nature (IUCN) identifies more than 8,500 “potentially polluting wrecks” (PPWs) worldwide. Over half of these lie in the Pacific. What was once a theater of war has become a silent victim, long overlooked.
According to the IUCN, these ships may collectively contain up to 22.7 billion liters of oil—a figure dwarfing the 2010 Deepwater Horizon disaster. A major spill from even one wreck could devastate marine ecosystems for decades.
Yet, the world tends to remember these wrecks as relics of history or tourist diving attractions rather than ecological threats. Many are already leaking, drip by drip, silently reshaping marine life around them.
Diving for Preservation
But not everyone is standing by. In Newcastle, Australia, a group of divers, scientists, and engineers from the Major Projects Foundation has decided to act. Their mission is not adventure, but conservation: to protect the ocean from this rusting legacy of war.
“Many of these ships are structurally fragile. If we don’t act now, we’ll lose control of the situation,” said Dr. Matt Carter, a maritime archaeologist leading the expeditions.
Armed with sonar, underwater drones, and small research vessels, they map wreck sites, assess corrosion levels, and design decontamination strategies. The work is painstaking. The wrecks lie scattered across remote waters, often dozens of meters deep, where time moves slowly but corrosion never stops.
Meanwhile, global attention is consumed by issues such as climate change, deforestation, and water crises. This looming threat, hidden beneath the waves, receives little notice. Yet the ocean is Earth’s largest and most vital life-support system. It absorbs carbon, provides food, and regulates climate. Damage it severely, and life on land will inevitably be shaken. (Sulung Prasetyo)
