Solitary Dolphin in Baltic Sea Talks to Himself, Researchers Think it's a Sign of Loneliness

A bottlenose dolphin, known as Delle, has been observed in the Baltic Sea making thousands of vocalisations. The solitary dolphin’s sounds, including whistles and clicks, suggest it may be lonely and trying to communicate. Despite being in an area outside the usual range for these dolphins, no other dolphins were nearby. Researchers are exploring whether these sound...