A severe humanitarian and economic crisis has emerged in the Persian Gulf as Iran’s blockade has trapped at least 2,190 commercial vessels, including 320 oil and gas tankers, in the strategic Strait of Hormuz. According to the latest marine data released Wednesday, the ships are stranded in the middle of the Gulf with almost no exit route. Maritime intelligence agency Kepler reported that among the trapped vessels are 50 crude oil carriers and 12 large liquefied gas ships. Normally, around 120 ships pass through the strait daily, but only six managed to cross between Tuesday and Wednesday.

Iran currently maintains full control over the waterway, allowing limited passage through a special corridor near Larak Island. Reports allege that Iran is charging up to $2 million per ship to pass, a practice sailors have dubbed the “Tehran toll booth.” Tehran has hinted that ships from “friendly” nations like Malaysia may be exempted. China confirmed that three of its ships crossed under special coordination, while some Indian and Greek vessels also managed limited passage.

The crisis has left about 20,000 sailors stranded at sea. The UK has called an emergency meeting with 35 countries, while China and Pakistan urged an immediate ceasefire and safe navigation. U.S. President Donald Trump warned Iran to lift the blockade or face tougher military action.