Caroline Bezengi Oil Spill Threatens Oman Marine Reserve
An aging oil tanker carrying Russian crude is leaking fuel near the Hallaniyat Islands off the coast of Oman, according to environmental monitoring organizations and maritime security reports. The 274-meter-long vessel, identified as the Caroline Bezengi, has been stranded on a shallow, rocky coastline for over a month following multiple explosions of unknown origin near Yemen, threatening a protected marine ecosystem that hosts rare humpback whales and coral reefs.
“We and others have been warning all this time that if nothing is done, there can be a major oil spill. And I’m afraid that’s what we’re starting to see now,” said John Amos, head of the environmental satellite monitoring organization SkyTruth, in an interview with Reuters. Amos noted that public satellite data shows no evidence of major rescue or salvage operations to stabilize the vessel since it grounded.
Sinking Ship Triggers Environmental Alarm in Arabian Sea
The trouble began on June 8 when the crew of the Caroline Bezengi reported distress while operating near the Yemeni port of Mukalla, according to two maritime security sources speaking to Reuters. Vanguard, a maritime security firm, reported last week that three unexplained explosions crippled the tanker’s engine and rudder, allowing water to flood the hull. Satellite imagery analyzed by Reuters and environmental groups shows that the vessel drifted and grounded near al-Kibliya island in Oman’s Dhofar province, where an oil slick now spans the waters between the islands and the mainland.
Did you know? The Caroline Bezengi loaded one million barrels of Russian crude oil on May 11 at the Black Sea terminal of Sheskharis in Novorossiysk, according to AFP data. Five of the tanker’s six cargo tanks were filled with Russian oil.
According to John Amos of SkyTruth, the worst-case scenario involves the potential rupture of one of the main cargo tanks. If a tank breaches, a significant quantity of oil could pour directly into the marine environment. Publicly available Automatic Identification System (AIS) data indicates the tanker stopped transmitting its location signal on June 11.
Sanctions and the Shadow Fleet Risk
The Caroline Bezengi is listed on international sanction registries maintained by both the European Union and the United Kingdom, classified as part of Russia’s shadow fleet. Moscow uses this network of aging tankers to bypass Western economic restrictions imposed following the invasion of Ukraine. Industry observers note that the advanced age and poor technical condition of these vessels create severe environmental liabilities along major shipping corridors.
“It is important to realize that every such loaded oil tanker is potentially a ticking time bomb,” Amos told Reuters, emphasizing that complex salvage operations require specialized equipment and experienced marine rescue teams that have not been publicly documented at the wreck site.
Impact on Protected Marine Biodiversity
Oman designated the waters surrounding the Hallaniyat Islands as a nature reserve in 2025, recognizing the region as a critical habitat for marine biodiversity, including coral reefs, nesting sea birds, and sea turtles. The area also supports an isolated population of Arabian Sea humpback whales.
“Oil in the water is toxic and is basically a poison to most marine organisms that come into contact with it,” Amos warned, noting that volatile compounds evaporate into toxic vapors while heavier fractions sink to the seafloor, persisting in marine sediments for years or decades.
Frequently Asked Questions
When did the Caroline Bezengi run aground?
The tanker became stranded on a shallow shoal near al-Kibliya island in Oman more than a month ago, following engine and rudder failures reported off the coast of Yemen on June 8.
How much oil is on board the tanker?
The vessel loaded one million barrels of Russian crude oil at the Novorossiysk terminal on May 11, with five of its six cargo tanks filled, according to data cited by AFP and SkyTruth.
What makes this oil spill particularly dangerous?
The spill is unfolding inside a protected Omani marine reserve established in 2025 that houses endangered wildlife, including an isolated population of Arabian Sea humpback whales and vital coral reef ecosystems.
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