Sea World Parks & Entertainment
Sea World: Harbor Seals
Outlines the characteristics of the harbor seal, including classification, habitat, behaviors, and conservation. Helps students identify with seals with a list of "Books for Young Readers." Information at a level of upper intermediate or...
Other
Cresli Seal Research Program
CRESLI Seal research studies the habits of seal life on Long Island Sound and works to protect the seals.
Smithsonian Institution
National Museum of Natural History: Arctic Studies Center Mammals Seals
This Smithsonian website has a brief, but thorough, article on the Seal that also includes pictures.