6Cave of the Seals – Alonissos

Located in the Alonissos Marine Park, this secluded cave is a sanctuary for the endangered Mediterranean monk seal.

It is accessible only by boat, making it a peaceful and unspoiled natural retreat. The cave is surrounded by stunning rock formations and pristine waters, perfect for snorkeling and wildlife spotting. While swimming inside, you may even catch a glimpse of one of the rare seals that call this cave home.