Nature provides us with an illustration that closely parallels the insidious tactic employed by our adversary. According to scientists, Arctic polar bears feed almost entirely on seals. To enjoy such a meal, they sometimes resort to a cunning bit of trickery. If the hole through which the seal gets his food is near the edge of the ice, the polar bear will take a deep breath and swim under water to its exact location. Remaining below the surface, he will then make a tiny scratching sound, imitating a fish. When the charmed seal hears this, he dives in for a quick supper, only to find himself suddenly entrapped in the huge, hungry embrace of his predator.