Off the Kerala coast, where the southeastern Arabian Sea meets the land, a container ship that went down in May is still speaking to the water long after its crew and cargo left the story. A study by the Centre for Marine Living Resources and Ecology, publicised by the Ministry of Earth Sciences, traces hydrocarbons and petroleum-linked metals from the wreck of the MSC ELSA 3 into sediment, seawater and the tiny drifting animals at the base of the food chain. It is a reminder that the sea keeps its own accounts, and that a single accident can pass its cost along through plankton and fish towar
Sunken ELSA 3 Wreck Off Kerala Continues Leaking Oil, Study Finds Widespread Marine Harm
Pollutants found in zooplankton raise potential risks to fish consumed by people, and marine life and seabirds are affected.
The wreck has become a local source of hydrocarbon and heavy-metal pollution.
Mark
Why does a finding about plankton matter to someone who just eats fish?
Mimi
Zooplankton sits at the base of the food chain. The study found petroleum-derived pollutants in it, at surface and deeper samples, and warns they can pass up to fish and eventually people.
Luke
Careful there. The study raises concerns about transfer. What's reported is that the pollutants are in zooplankton. It doesn't say fish people eat are contaminated.
Mark
What ties the contamination to the wreck specifically?
Mimi
Elevated naphthalene, which normally signals human-induced contamination, plus nickel, lead, copper and vanadium in water and sediment near the site. The study says that strongly suggests leakage from the fuel compartments.
Luke
Note the wording: strongly suggests. The report does say its findings confirm the wreck is a local source of pollution, but I'd like to see the sampling details, which this account doesn't give.
Mark
And the seabird?
Mimi
A Brown Noddy sheltered on the wreck and kept preening, a typical reaction to oiled plumage.
Luke
That's one bird observed. It's illustrative, not a measure of wider seabird harm.
Mark
What's still unknown?
Luke
How much oil has actually leaked, and when the fuel compartments will be sealed. The recommendation is urgent, but no timeline is given.
Il Polso
- A container ship carrying hazardous cargo and hundreds of tonnes of fuel sank about 38 nautical miles off Kerala in May, and its damage is still spreading.
- Naphthalene and nickel, lead, copper and vanadium are turning up in water and sediment near the wreck, pointing to fuel compartments that are leaking.
- Pollutants have already reached zooplankton, the foundation of the marine food web, raising fears of bioaccumulation in fish eaten by people.
- Seabirds such as the Brown Noddy, seen repeatedly preening oil from their feathers, are showing the visible toll on higher marine life.
- Researchers are calling for urgent sealing of the fuel compartments and long-term monitoring, but no timetable for sealing has yet been announced.
Off the Kerala coast, where the southeastern Arabian Sea meets the land, a container ship that went down in May is still speaking to the water long after its crew and cargo left the story. A study by the Centre for Marine Living Resources and Ecology, publicised by the Ministry of Earth Sciences, traces hydrocarbons and petroleum-linked metals from the wreck of the MSC ELSA 3 into sediment, seawater and the tiny drifting animals at the base of the food chain. It is a reminder that the sea keeps its own accounts, and that a single accident can pass its cost along through plankton and fish toward the people who eat them.
On a stretch of sea off the Kerala coast, a small Brown Noddy spent a long time perched on the wreck of the MSC ELSA 3, preening its feathers again and again. Researchers read the behaviour as the familiar struggle of a bird with oil on its plumage, and they cite it in a new study as one visible sign of what the sinking has done to the region.
The study was carried out by the Centre for Marine Living Resources and Ecology and publicised through a statement from the Ministry of Earth Sciences. Its conclusion is that the ship's sinking in May caused significant ecological disruption, reaching water quality, plankton, fish eggs and larvae, and higher marine life. The vessel went down on May 25 about 38 nautical miles offshore, carrying 640 containers, at least 13 of them holding dangerous substances, along with roughly 85 tonnes of diesel and 367 tonnes of furnace oil.
The chemical evidence points to polyaromatic hydrocarbons, including naphthalene, which the study says strongly suggests leakage from the wreck's fuel compartments. Metals associated with petroleum, such as nickel, lead, copper and vanadium, were also elevated in nearby water and sediment. The damage moves up the food chain: zooplankton, the base of the marine web, held high levels of petroleum-derived pollutants, and the study warns that they could pass to fish and eventually to people.
The Ministry stresses that oil was still present days after the sinking despite currents and turbulence, so leakage may be ongoing. The study calls for urgent sealing of the fuel compartments and long-term monitoring of the region. What remains unsettled is when, or whether, the wreck will be sealed, and that is the question the coming weeks will have to answer.
A Brown Noddy, a small seabird, spent a long stretch sheltering on the wreck of the MSC ELSA 3 off the Kerala coast, preening its feathers again and again. Researchers read that as a typical response to oil on plumage, and they cite it in a new study as one visible sign of what the sinking has done to the south-eastern Arabian Sea.
The study was carried out by the Centre for Marine Living Resources and Ecology (CMLRE) and publicised through a statement from the Ministry of Earth Sciences in New Delhi. It concludes that the ship's sinking in May caused significant ecological disruption, touching water quality, plankton, fish eggs and larvae, and higher marine life.
The vessel went down on May 25, roughly 38 nautical miles off the Kerala coast. It was carrying 640 containers, among them hazardous cargo. At least 13 of those containers held dangerous substances such as calcium carbide. The ship was also loaded with an estimated 85 metric tonnes of diesel and 367 metric tonnes of furnace oil.
The chemical evidence centres on polyaromatic hydrocarbons, or PAHs. The analysis found naphthalene, fluorene, anthracene, phenanthrene, fluoranthene and pyrene. The study says the elevated naphthalene, which normally points to human-induced contamination, strongly suggests leakage from the wreck's fuel compartments. Trace metals commonly associated with petroleum, including nickel, lead, copper and vanadium, were also found at higher concentrations in both water and sediments near the site. The report says this confirms the wreck has become a local source of hydrocarbon and heavy-metal pollution.
The effects reach into the food chain. Zooplankton, the base of the marine food web, contained high levels of petroleum-derived pollutants. All major PAH fractions turned up in both surface and deeper samples, which the study says confirms bioaccumulation. It warns of the transfer of these pollutants through the food web to fish and, ultimately, to humans.
The Ministry's statement stresses persistence. Oil was still present several days after the sinking despite turbulence and current flows in the area, which it says highlights the risk of continued leakage. The study also treats the Brown Noddy as evidence that marine birds and other higher organisms near the spill are vulnerable.
The recommendations are specific. The study calls for urgent sealing of the wreck's fuel compartments and for long-term monitoring of the affected region, to safeguard marine ecosystems and fisheries resources. Whether and when the compartments will be sealed is not addressed in the findings released so far, and that is the next thing to watch.
Citazioni salienti
All major PAH fractions were detected in both surface and deeper samples, confirming bioaccumulation and raising concerns about the transfer of these pollutants through the food web to fish and ultimately to humans.— CMLRE study
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