Definition

Noun: A species of baleen whale (Balaenoptera borealis) that is similar in appearance to but generally smaller than the fin whale (also known as the finback whale). It is one of the fastest swimming whales.

Usage

The term "sei whale" is used to specifically identify this particular species of large whale. It functions as a countable noun. * The sei whale is known for its streamlined body and rapid swimming speed. * Researchers observed a pod of sei whales feeding near the surface. * The sei whale's diet primarily consists of small fish and plankton.

Advanced Usage

• Scientific Classification: The sei whale is often discussed in scientific and conservation contexts, classified under the family Balaenopteridae (the rorquals).
• Etymology: The name "sei" comes from the Norwegian word for pollock ("seje"), as these whales often appeared off the coast of Norway at the same time as the pollock fish.

Variants and Related Words

• Rorqual: A general term for baleen whales with pleated throats, which includes sei whales, fin whales, and blue whales.
• Baleen whale: The broader category of whales that use baleen plates to filter food from water, as opposed to toothed whales.

Synonyms

• Balaenoptera borealis (Scientific name)
• Pollack whale (An older, less common name referencing its etymology)

Related Phrases

• Sei whale population: Refers to the number and health of sei whales as a group, often discussed in conservation.
  • International agreements aim to protect the sei whale population from commercial whaling.
• Sei whale migration: Describes the seasonal movement patterns of these whales.
  • The study tracked the sei whale migration across the North Atlantic.

Noun

1. similar to but smaller than the finback whale