Companion Web site to the PBS television series. Includes articles on recreational shark diving, shark and ray diversity; video preview of the program, featuring a segment on the characteristics of sharks and rays.

Features a checklist of freshwater fishes native to North America, information and images for more than a dozen fish species, selected articles from American Currents magazine.

Companion Web site to a NOVA documentary about the coelacanth, a fascinating living fossil. Information about how coelacanth anatomy is like that of no other animal alive.

Documents the 1998 discovery of a coelacanth fish in North Sulawesi, Indonesia. Includes photographs, habitat maps, information on conservation.