It is called socializing for the fishes & their groups are called schools
        
                    
             
        
        
        
When a tourist told him that each turtles look different on the island
        
             
        
        
        
Hello there ^ _ ^ 
I believe the answer is : A - Evolution 
Good luck! 
        
                    
             
        
        
        
The 'cheek'  is the common name for the insect GENA.
The gena is located in the head area of insects. The gena forms the sclerotized area on each side of the head, below the compound eyes, which extends to the gular structure. The gena varies among species of insects.