File:The Sperm Whale Prepares To Breed - Attenborough - Life of Mammals - BBC Earth

The Southern Right Whale is an enormous creature - in more ways than one. In this clip, a group of fertile males surround a female who is not initially receptive in order to mate. With a twelve foot long penis and testes that weigh a ton, picking the right moment is critically important. From Life of Mammals. Visit http://www.bbcearth.com for all the latest animal news and wildlife videos and watch more high quality videos on the new BBC Earth YouTube channel here: http://www.youtube.com/bbcearth

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