“Death whistles,” or Aztec skull whistles, were short, carved instruments made of two opposing chambers where air could clash ...

What happens when a highly social creature like a bottlenose dolphin is left utterly alone? Delle, a solitary dolphin in ...

The only dolphin in the Baltic Sea seems to like muttering to himself. Researchers are trying to figure out why.

The researchers listened in on Delle with an underwater microphone for 69 days, between December 8, 2022, and February 14, ...

Marine biologists are perplexed by the lone bottlenose dolphin's vocalizations, because some resemble sounds typically used ...

The sole dolphin living in the Baltic Sea isn’t letting the lack of company silence him. Quite the opposite – he’s chatting ...

Could this solitary dolphin be talking to himself because he's lonely? Delle, a solitary dolphin living in Svendborg Sund, is thought to talk to himself to ease his loneliness.

A lonesome male dolphin named Delle surprised researchers by engaging in self-talk, emitting various vocal sounds while ...

When you are alone, especially for long periods of time, do you talk to yourself? If so, you’re in interesting company ...

Scientists have recorded a "lonely" dolphin speaking to himself in the Baltic Sea.  Dolphins are known to be social animals ...

Discover Delle, a lone bottlenose dolphin in the Baltic Sea, whose unique vocalizations captivate scientists and locals.

New England rematch Miami Dolphins On SI mailbag: From Common Reader: Did someone give Liam a book of old Yo' Mama jokes? Why ...