Stranded ships in Hormuz Strait risk 'super-spreader event' for invasive species, researchers warn

A new study warns that the 1,500 cargo ships stranded in the Strait of Hormuz due to the US-Iran conflict could trigger a catastrophic ecological event. Researchers are concerned about a potential "super-spreader event" for invasive marine species, which could devastate local ecosystems.

Normally, ships transport microbes and algae between ports, but the extended period these vessels have been stationary in the Strait of Hormuz significantly elevates the risk. Organisms such as barnacles, which are a type of crustacean, can attach themselves to ship hulls. These invaders can then be transported to new regions, potentially outcompeting native species and causing local extinctions.

"If you had designed the worst-case scenario, I'm not sure you could have done it better," said Mario Tamburri, the study's lead author, in an interview with The Guardian. He emphasized that while the human suffering in the region is the most immediate concern, the potential for a marine ecological disaster cannot be ignored. Tamburri compared the situation to tracking the spread of influenza or COVID-19, stressing the need for early detection and swift action.

The researchers are particularly worried about ports in countries with climates similar to the Persian Gulf, such as India and Singapore. The Middle East is already known for having numerous invasive species that hitchhike on international trade vessels. The study highlights that hardy organisms, capable of surviving extreme environments, are often the most successful invaders, posing a significant threat to global marine biodiversity.