Eat or be eaten, is the theme of this documentary. But there is a natural balance between the hunters and the hunted. Observe with us hunting methods of big and small fish and their strategies to eat but not be eaten and see their clever tactics. Fish pretending to be much larger than they really are and while others are hiding, calmly waiting for their prey. So what is the best strategy with which to avoid predators, live to see the next day, be able to breed and secure your offspring? Mackerel, shark, nap..