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Sei Whale
Characteristics
Scientific Name:
Balaenoptera borealis
Family Name:
Balaenopteridae
Size:
25-50 feet
Weight:
40 tons
Color:
dark gray with white on the underside
Life Span:
M ay live for up to 70 years
Diet:
mostly plankton, but also krill, shrimp and small fish
HOME >> WATER SPECIES >> WHALES >> Sei Whale


Sei Whale

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Sei Whale Description
  The sei whale (pronounced "say") measures 25-50 feet (8-15 m) in length and weighs 40 tons (36 metric tons), making it the third largest baleen whale, behind the blue and finback whales. It can be identified by its inverted "V" shaped water spout which reaches 6-8 feet into the air. The body is dark gray with variable white undersides, usually limited to the area of the throat grooves which do not reach as far as the navel. In Antarctic and Pacific populations, there are light-colored patches all over the upper body. However, Atlantic populations lack the patches and are more uniformly dark. The sei whale resembles a blue or finback whale, but has a smaller and more curved dorsal fin and is dark on the undersides of the flippers and tail flukes. This whale may be the fastest of the large whales, able to cruise at 16 mph (14 knots) with a maximum speed of 40 mph (35 knots) recorded. Sei whales usually travel alone or in small groups of five or less.  
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