This video from Nature discusses the important role of salmon in an ecosystem, highlighting one region where salmon are abundant and another where salmon are scarce. The video describes the ways in which different species depend upon each other and how species are impacted by the presence and absence of salmon. It explains how invertebrates feed on dead adult salmon and, in turn, serve as food for newborn salmon, as well as how bears eat salmon carcasses and spread salmon-generated marine nutrients in the mountains.
This video is available in both English and Spanish audio, along with corresponding closed captions.
Learn more about the Nature film Salmon:Running the Gauntlet.