Turtle charging at the camera (video)

I have never seen a turtle opening mouth like that lol.I only know a saying about turtle.When someone call u a turtle,you won't be happy.What they want to say is that u are craven.Expecially they say "sink-head" turtle to a man,who is considered to be a coward.No one like be called like that,but for the real turtles,many people like them.And we know,turtles can live for long.Some scientists are curious about the reason why they can live long.Maybe there is someone doing reaserch on turtles for finding the reason of long life turtles lol.