Dolphin Antennas

Scientists think that dolphin's teeth aren't just for grabbing – a hypothesis that is gaining considerable support suggests that dolphin teeth might be used as an antenna. Not an antenna for picking up radio or television signals (dolphins probably aren't too bothered if they miss an episode or two of Survivor), but for detecting sonar signals. Learn more about the strange properties of dolphin teeth in this week’s episode. Transcript :: Read a transcript of this episode with web links Scientific article about dolphin 'antenna teeth' :: A recently published article going into great detail about the acoustic properties of dolphin teeth, and how they could potentially act as an antenna File Download (5:25 min / 5 MB)