Ocean Giants: Voices of the Sea
Season 30 Episode 10 | 49m 38s | Video has closed captioning.
Humpback whales' songs carry thousands of miles, while a sperm whale scans the ocean depths with a sonar laser beam louder than a thunderclap. "Voices of the Sea" reveals a surprising underwater world where sound takes the place of sight.
Problems Playing Video? | Closed Captioning