Oil slicks moving along Iran’s southern coast have reached the Hara mangrove forests of Qeshm Island. Iranian authorities say the extent of the contamination is still being assessed and the source of the oil pollution has not yet been established. But several oil spills have been detected in the region since the war between the US and Iran began.

The Hara forests lie in the Khuran Strait, which separates Qeshm Island from mainland Iran. This waterway is close to the Strait of Hormuz – one of the most strategically important marine corridors on Earth. The Strait of Hormuz is normally discussed through the vocabulary of geopolitics: barrels of oil, shipping lanes, energy prices and global trade.

But beneath that geopolitical map lies another map that receives far less attention. The Strait of Hormuz and its surrounding waters are home to mangroves, coral reefs, seagrass beds, fisheries and coastal communities. They also provide the seawater upon which some of the world’s most water-stressed societies depend.

The Strait of Hormuz is not only an energy chokepoint. It is an ecological chokepoint. And prolonged conflict exposes both at the same time.

An oil slick on open water is a serious pollution event. But oil entering a mangrove ecosystem creates a different problem. Mangroves occupy the boundary between land and sea, with dense root systems that slow water movement and trap sediments.

The same characteristics that make these ecosystems extraordinarily productive........

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