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    Changing Seas
            The Secret Sex Life of Fish
                
                    
                        
                            Season 7
                        
                    
                    
                        
                            Episode 704
                        
                    
                
            
            
            Most people are familiar with the pretty tropical fish found in aquariums, but few realize that some of these animals are capable of changing sex. Discover the unique ways of how some fish species do this and why they likely evolved this way.
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            Scientists work to unravel the cause of the fish spinning phenomenon in the Florida Keys.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
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            Experts study southern sea otters to ensure their longtime survival on California’s coast.
        
        
     
    
                            
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            Islanders restore Maui's watersheds through traditional Hawaiian wisdom.
        
        
     
    
                            
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            Florida scientists make remarkable discoveries about whitespotted eagle rays.
        
        
     
    
                            
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            Marine archaeologists uncover a Roman shipwreck on Croatia's Adriatic Coast.
        
        
     
    
                            
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            Researchers brave the Arctic’s cold and dark to reveal the mysteries of the Polar Night.
        
        
     
    
                            
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            Amid shipwrecks and shifting sands, Bermuda’s corals offer clues to climate resilience.
        
        
     
    
                            
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            Knowledgeable fishers collaborate with scientists to keep sharks abundant.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
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            Researchers and citizen scientists document the fascinating lives of seashells.
        
        
     
     
     
     
     
     
     
     
     
     
     
    