Greek Prison Island Now Shelters 70 Rare Monk Seals

An amateur fisherman's photograph in 2004 changed everything for a forgotten Greek island and a critically endangered species.

The image showed something biologists thought had vanished from Greece: a Mediterranean monk seal mother and pup resting peacefully on an open beach in broad daylight. The location was Gyaros, a desolate island in the Aegean Sea that spent half a century as a military prison and bombing range.

For decades, Gyaros earned the nickname "Devil Island." More than 20,000 political prisoners passed through its brutal camps between 1948 and 1974, enduring forced labor and torture far from the world's attention. After the military dictatorship fell, the Greek navy used it as a bombing range until 2002.

That isolation created an unexpected refuge. While nearby islands like Mykonos built hotels and welcomed tourists, Gyaros remained untouched by development. Fishing was discouraged during the military era, creating rich feeding grounds in the surrounding waters.

When scientists finally reached the island after seeing the fisherman's photo, they discovered around 70 adult seals living there. It was possibly the largest Mediterranean monk seal colony at the time, out of just 350 to 450 remaining worldwide.

The seals' behavior astonished researchers even more than their numbers. Biologist Spyros Kotomatas of WWF Greece noticed the animals were completely relaxed, nursing pups on open beaches instead of hiding in remote caves like seals elsewhere. "Seals elsewhere behaved like Greeks in Athens – tense, alert," he says. "On Gyaros, they were relaxed."

The discovery sparked new protection efforts. In 2019, Greece declared Gyaros the region's first Marine Protected Area, with a three-nautical-mile fishing exclusion zone. Officers from Greece's Natural Environment and Climate Change Agency now patrol the waters to ensure compliance.

The Bright Side

Mediterranean monk seals were hunted for centuries and lost most of their habitat to coastal development. By the late 20th century, they had become ghosts, retreating into hidden sea caves just to survive.

Gyaros proved that given space and protection, these intelligent animals can reclaim their natural behaviors. The seals that once cowered in caves now bask openly on beaches, raising their young without fear.

The island's transformation shows how nature can heal in unexpected places, even in sites marked by human cruelty.

Today, an island built for punishment has become a symbol of hope for one of Earth's rarest marine mammals.