MarineBio Conservation Society
Marine Bio: Sei Whales
Discover useful information about sei whales including description, behavior, range, habitat, diet, breeding, and conservation status.
Smithsonian Institution
National Museum of Natural History: American Mammals: Sei Whale
Unlike other rorquals, Sei whales have a dolphin-like dorsal fin. They are also unusual in using two different methods to fill their mouths with water during feeding - they both gulp and skim-feed. Learn more about the Balaenoptera...