Deep in the Eurasian continent, the Sea of Azov is a stepping stone between freshwater and saltwater. Like no other sea in the world, it sits at the far end of a chain of water bodies: the Black, Marmara, Aegean, and Mediterranean Seas, and all the straits that connect them.
Every year, a small group of harbour porpoises traverses a narrow strait from the Black Sea to the Sea of Asov, then returns again, in a natural migration cycle. Since prehistory, these Black Sea porpoises have been isolated, evolving separately from other porpoises, becoming smaller, but with larger snouts. They’re sleek and cute, with eyes and mouths that have the perpetual hint of a smile.
