Satellite analysis shows roughly twice the expected amount of surface oil in the Persian Gulf as a result of the war between the United States, Israel and Iran, scientists tracking the waterway have told CNN.
Brian Barnes, part of a group of satellite oceanographers at the University of South Florida studying the conflict from a distance, said the link between strikes on vessels and environmental damage is visible from orbit. “Some of the major ships that have been targeted, we see prolonged plumes, stretching for hundreds of kilometers away from the impact site,” he said.
Research by Barnes and other scientists compared March 2026, when fighting was at its most intense, with the same period a year earlier. “What we’re seeing is twice the amount of surface oil in the Persian Gulf area relative to what we would expect in the absence of a major conflict,” he said. He cautioned that satellites capture only what sits on the surface, not the thickness of the oil, so the true extent of contamination is likely understated.
The damage is not confined to the water. Strikes on oil facilities have ignited fires that blanketed Tehran in thick black smoke and oil-saturated rain, while bombs and missiles have released heavy metals and harmful chemicals into the air, exposing millions of people to pollution with potentially long-lasting health effects.
A spill from a tanker has temporarily closed beaches in the emirate of Umm Al Quwain, according to a statement issued on Thursday by the United Arab Emirates Ministry of Climate Change and Environment. It has not been confirmed whether that spill is connected to Iranian attacks.
What is at stake is one of the world’s more unusual marine systems. The Gulf hosts several species of sea turtle, hundreds of fish species and the world’s second-largest population of dugongs. Bernhard Riegl, a professor at Nova Southeastern University who has studied the region for decades, noted that “one of the world’s largest whale shark congregations occurs close to the South Pars oil field where Qatar and Iran meet.”
Hiru News carried a Sinhala-language summary of the CNN report for Sri Lankan readers, crediting the broadcaster. The waterway it describes is the same route this desk has tracked through months of attacks on shipping around the Strait of Hormuz — the corridor whose disruption has driven Brent crude from $112 to $117.37 in three days.
Sources: The Iran war’s toxic impact on one of the planet’s most unique seas — CNN, October 23, Severe impacts on the Persian Gulf ecosystem from the Iran war — Hiru News, October 23 (Sinhala).
