Iran’s Hormuz Island's coastline turns crimson. Here's why

Hormuz Island in southern Iran has drawn international attention after parts of its coastline took a striking blood-red hue, sparking widespread discussion on social media.

The phenomenon occurred when intense rain washed over the island's iron-rich soil, carrying mineral sediments into the surrounding beaches and shallow waters.

Geologists explain that Hormuz Island contains high concentrations of iron oxide, particularly hematite, which gives the land its naturally red colouration.

When rainwater flows across this terrain, it transports fine particles of iron oxide toward the coast, temporarily staining the sand and water a deep crimson.

Hematite oxidises rapidly when exposed to moisture, intensifying the red appearance during periods of heavy rain.

The effect is most pronounced in areas with higher erosion, where mineral runoff is more concentrated.

Despite its dramatic appearance, experts stress that the phenomenon is entirely natural and poses no environmental or health risks.

Authorities and environmental specialists have confirmed that the red colouration is not linked to pollution or harmful algal blooms, but rather to the island's unique geological composition.

Often referred to as the "Rainbow Island of the Persian Gulf," Hormuz is known for its diverse mineral landscape, featuring vivid shades of red, yellow, orange, and white shaped over thousands of years of geological activity.

While the recent red coastline has captured global attention, the island remains a year-round destination for tourists and researchers alike, offering insight into the interaction between weather patterns and Earth's mineral-rich environments.