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Definition of sei in English English dictionary
- A sei whale
- four-
- sei whale
- a whale of the rorqual family (Balaenoptera borealis)
- sei whales
- plural form of sei whale
- sei whale
- A rorqual (Balaenoptera borealis) that is blue-black above and white below, that grows up to about 55 feet (17 meters) in length, and that is found in all the oceans, with the greatest number living in Antarctic waters. or Rudolphi's rorqual Swift species (Balaenoptera borealis) of baleen whale in the rorqual family. It is 40-50 ft (13-15 m) long and is bluish gray or blackish above and paler below. It has small flippers, about 50 short lengthwise grooves on its chest, and dark baleen with pale, silky, inner fringes. It inhabits oceans from the Arctic to the Antarctic, migrating between cold and temperate summer waters and winter breeding grounds in warmer regions
- sei whale
- similar to but smaller than the finback whale