Sei Whale Fact Sheet
- Description, life history, distribution, habitat and status of this endangered species.
- http://www.dec.ny.gov/animals/9363.html

Discovering Whales: The Sei Whale
- General information and map.
- http://www.omplace.com/omsites/discover/SEI/

Balaenoptera borealis (Sei Whale)
- Species account from the Animal Diversity Web.
- http://animaldiversity.ummz.umich.edu/accounts/balaenoptera/b._borealis

Sei Whale, Balaenoptera borealis
- Photos, description, distribution, ecology, and behavior.
- http://www.aquatic.uoguelph.ca/mammals/whales/accounts/sei.htm