Heavy storms on Hormuz Island in Iran turned rainwater and coastal seas a striking blood-red as iron-oxide-rich soil washed down cliffs and into the ocean.

The phenomenon, known locally as “Red Beach,” is caused by golak soil, which turns crimson when it comes into contact with water due to high levels of hematite.

The dramatic scene drew widespread attention online, with some comparing it to biblical imagery, though scientists confirm it is entirely natural.

Hormuz Island, often called “Rainbow Island,” is known for its colorful mineral-rich soils formed over millions of years within a salt dome structure, the U.S. Sun has reported.

Similar “blood rain” events have occurred elsewhere, including Israel’s Sea of Galilee, where algae blooms—not omens—were responsible for the red coloration.