Why Iran’s Hormuz Island Turns Blood-Red After Rains
A viral video showing Iran’s Hormuz Island turning blood-red after rainfall has drawn global attention. The phenomenon is caused by iron-rich soil containing hematite, which oxidises when exposed to water and air. Rainwater carries these minerals to the coast, temporarily staining beaches and seawater red, creating a striking but natural spectacle.
A viral video showing the beaches of Hormuz Island turning blood-red after rainfall has captured widespread attention online. The striking transformation, which makes the shoreline appear almost surreal, is a natural phenomenon linked to the island’s mineral-rich soil.
Located in the Persian Gulf near the strategically important Strait of Hormuz, the island is known for its unique geological features. Experts say the red coloration is temporary and occurs under specific environmental conditions. US Warships Move Through Strait of Hormuz as Iran Claims Vessels Retreated After 30-Minute Threat: Reports.
Video Shows Hormuz Island Turning Blood-Red After Rains
Hormuz Island Turns Blood-Red: What Causes the Red Colour?
Scientists attribute the phenomenon to high concentrations of iron oxide in the island’s soil, particularly a mineral known as hematite. When rainwater flows over into the sea, it dissolves and carries these iron-rich particles toward the coast.
As the iron comes into contact with oxygen and moisture, it undergoes oxidation, the same process that causes rust, turning the soil and water into deep shades of red and orange. Iran Struggles To Reopen Strait of Hormuz As Missing Sea Mines Complicate Navigation, Says Report.
How Rainfall Transforms the Landscape
During heavy rains, surface runoff channels the mineral-rich sediments from hills and rocky terrain down to the beaches. This process temporarily stains the shoreline and shallow waters, creating the dramatic “blood-red” effect seen in viral footage. The intensity of the colour depends on rainfall levels and the amount of exposed mineral deposits.
Hormuz Island sits atop ancient salt domes and volcanic formations, making it rich in minerals such as ochre, gypsum, and iron ore. This diverse composition has earned it the nickname “rainbow island.” The presence of hematite also draws comparisons to Mars, where similar iron oxide compounds give the surface its reddish appearance.
The phenomenon regularly attracts tourists, photographers, and geologists interested in the island’s unusual terrain. While the red coloration is harmless and fades over time, experts note that ongoing erosion could gradually reshape parts of the island.
For now, the event remains a vivid example of how natural processes involving geology, weather, and chemistry can create visually striking landscapes.
(The above story first appeared on LatestLY on Apr 12, 2026 08:01 AM IST. For more news and updates on politics, world, sports, entertainment and lifestyle, log on to our website latestly.com).