A single bottlenose dolphin wandering for the last three years through the Baltic Sea appears to be screaming into the void, desperate to connect with other members of its species. Researchers say they aren’t sure why the marine mammal, dubbed Delle, is making “sounds typically considered communicative,” but they suggest the dolphin may be engaging in “self-talk,” using its cries as a substitute for interactions with other dolphins.

adapted with permission from Earthweek.com