| Lives of Whales
 
 Sei whale
 Photo:
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 Average length (m):
 Southern Hemisphere: 15-16
 (females are larger)
 Northern Hemisphere: 13.6-14.5 (females are
 larger)
 Average weight (tonnes):
 20-25
 Conservation:
 A target for modern whaling but not reduced
 as heavily as blue and fin whales.
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