Rare Seals Hide From Tourists in Greece

Researchers in Greece observed rare Mediterranean monk seals using underwater cave systems to avoid people on the island of Formicula. The seals, one of the most endangered seal species globally, historically rested on open beaches. Increased human activity now drives them to seek shelter in remote caves.

A recent study published in Oryx revealed the seals are utilizing unusual “bubble caves”—small, air-filled chambers accessible only through underwater passages—during the summer months. Scientists previously suspected this behavior but believed it was temporary. Cameras monitored caves for 141 days in 2020 and 2021, showing seals occupied the bubble caves for 119 days.

The main cave received only 30 days of occupation. The researchers note that these hard-to-reach spaces offer protection from disturbance.

Further study is needed to fully understand how these habitats contribute to the seals’ survival and reproductive success. Conservation efforts may need to expand to include these bubble caves.