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Ocean Giants

Series 1 Episode 3: Voices of the Sea

Taking a look at whales and dolphins, nature's supreme vocalists. The mighty sperm whale creates deafening clicks to hunt giant squid in the ocean abyss, while narwhals use sound to locate vital breathing holes in Arctic ice-floes. The Amazon boto dolphin's ultrasonic calls help it find fish in murky waters, while killer whales in the North Sea use wolf-like howls to round up herring shoals.

Category
Documentary / Animals
Original air date
2011-08-28
Cast and crew
  • Stephen FryNarrator