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    Nature
            Fortress of the Bears
                
                    
                        
                            Season 30
                        
                    
                    
                        
                            Episode 6
                        
                    
                
            
            
            Alaska's Admiralty Island is home to an estimated 1800 brown bears, the largest concentration of bears in the world. Enter a world shaped by bears, trees, and salmon, and the delicate balance of their interconnected lives.
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          53:33
        
      
    
  
  
                    
                
            Experience San Diego, where dazzling biodiversity thrives amidst a transformed urban landscape.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          53:31
        
      
    
  
  
                    
                
            Discover the wildlife of Transylvania, a mysterious region hiding some of Europe’s last wilderness.
        
        
     
    
                            
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          53:45
        
      
    
  
  
                    
                
            In Congo, filmmaker Vianet Djenguet comes face to face with the forest’s largest gorilla.
        
        
     
    
                            
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          53:27
        
      
    
  
  
                    
                
            See the spectacular wildlife of The Burren in Ireland through the eyes of a pine marten.
        
        
     
    
                            
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          53:29
        
      
    
  
  
                    
                
            Witness a moving view into the effects of war on animals and the humans who help them.
        
        
     
    
                            
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          53:18
        
      
    
  
  
                    
                
            The most famous grizzly bear in the world attempts to raise cubs amid conflicts with people.
        
        
     
    
                            
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          53:28
        
      
    
  
  
                    
                
            See the extreme ways in which raptors conquer the toughest habitats on Earth.
        
        
     
    
                            
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          53:58
        
      
    
  
  
                    
                
            From giant eagles to miniature falconets, meet the many species of raptors.
        
        
     
    
                            
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          53:08
        
      
    
  
  
                    
                
            Patrick Dykstra has a life-changing encounter with a sperm whale and uncovers their world.
        
        
     
    
                            
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          53:03
        
      
    
  
  
                    
                
            Sir David Attenborough and experts unearth the fossil of the largest Jurassic predator.
        
        
     
    
                            
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          53:18
        
      
    
  
  
                    
                
            Get an intimate look at a silverback family in Gabon’s Loango National Park.
        
        
     
     
     
     
     
     
     
     
     
     
     
     
    