General

Sei Whale

posted: 12/01/15
sei whale
Gerard Soury/Getty Images
Status: Endangered
Scientific Name: Balaenoptera borealis
Length: 45-66 feet
Weight: About 20 tons

Reaching speeds up to 34.5 miles per hour makes the Sei Whale the fast whale in the water. They prefer subtropical to subpolar waters and can be found in all oceans and adjoining seas, except for those in tropical and polar regions.

Like all whales, Sei Whales also suffer from commercial hunting and whaling. Other threats include being struck by ships and becoming entangled in fishing gear. Sei Whales are protected under the Marine Mammal Protection Act of 1972 and the Endangered Species Act of 1973.

How You Can Help:

  • NOAA: Learn more about the Sei Whale's habitat, threats, and efforts being made for conservation.
  • World Wildlife Fund: Learn more about the Sei Whale, conservation efforts, and what you can do to help ensure the species' survival.
More on
Endangered Species