Dolphins are known for their sophisticated communication skills. Bella, a late-term, pregnant dolphin at Six Flags Discovery Kingdom in Vallejo, California, was recently discovered vocalizing her "baby whistle" to her unborn baby.
This signature whistle is used to imprint onto their babies. Dolphins also use it to announce themselves when they come in contact with new dolphins, much in the way a person uses one name throughout their life.
Bella did give birth to a healthy boy. Immediately, after taking its first breath the baby repeated its signature whistle.
To hear the whistle, click here.
