00:00Nature's loudest voices.
00:02How animals use extreme volume to survive.
00:05A howler monkey roars across a rainforest canopy.
00:09Across oceans, jungles and grasslands, some animals blast calls so loud they shake air,
00:15water and ground for miles.
00:17A howler monkey bellows in the Amazon rainforest, pushes sound through a specialized throat
00:22and reaches volumes louder than a jet engine nearby.
00:26A blue whale sends low frequency calls through the Pacific Ocean and its sound travels hundreds
00:32of miles underwater to reach distant whales.
00:36A pistol shrimp snaps its claw in shallow ocean water, creates a shockwave bubble and produces
00:42a sound louder than a gunshot.
00:44A lion roars across the African savanna, vibrates its chest and warns rival males from miles away
00:51across open land.
00:52A kakapo booms deep calls in New Zealand forests, inflates air sacks and sends sound echoing
00:58through valleys during mating season.
01:01A wolf howls across Yellowstone valleys, carries its voice across mountains and signals pack
01:07members from long distances.
01:09From ocean depths to jungle treetops, these animals rely on extreme volume to communicate,
01:15hunt and defend territory.
01:16When these creatures call out, the entire environment listens.
01:20A wolf howls across the sea.
01:21A wolf howls across the sea.
01:21A wolf howls across the sea.
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