Feeling the Force of Sperm Whales Ultrasound | Super Giant Animals | BBC Earth

Sperm whales can hunt in total darkness under the sea but how? Steve Backshall explains how sperm whales use sound to build up a picture of their environment as he gets up close to them. Taken from Super Giant Animals. Subscribe to BBC Earth: http://bit.ly/BBCEarthSubBBC Earth YouTube Channel:    / bbcearth   BBC Earth Facebook   / bbcearth   (ex-UK only) BBC Earth Twitter   / bbcearth   Visit http://www.bbc.com/earth/world for all the latest animal news and wildlife videos This is a commercial channel from BBC Studios. Service & Feedback https://www.bbcstudios.com/contact/co...