A rorqual found in open oceans worldwide, except in polar regions (Balaenoptera borealis); length, up to 20 m/65 ft; dark grey with white underparts; streamlined, with a flat head; eats minute crustaceans and some small fish.
| iSei Whale |
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A Sei Whale surfacing side-on Size comparison against an average human |
| Conservation status |
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