One day, a fisherman threw his net into the river and sat there, waiting for a bunch of fish to gather so that he could sell them in the market and make some good money. After some time, the fisherman hooked a little fish in the net, thinking he must have caught a lot of fish. He started to pull the net out of the water, but then he saw that there was only one tiny little fish in it. Suddenly, the little fish started talking to the fisherman, saying, "Oh fisherman, please let me go, please let me go." But the fisherman didn't pay any attention to the fish's request.
Then, the tiny little fish said to the fisherman, "I will tell you something suspicious which will be a huge help if you let me go back into the water. I will tell all my golden fish friends about you. And I'll bring a lot of golden fish to the bank's coffee first. So when you come next time, you'll have many more fish." The fisherman talked to himself, saying, "Wow, that is not bad. I found one tiny little fish today. Tomorrow I will catch a lot of fish."
The fisherman let the little fish go and it happily went into the river, never to come back again. Poor fisherman. He came again the next day and expected to catch a lot of golden fish, which were very clever. And because of the clever net, he saved his life from the fisherman. So, to conclude, most of you have to be really, really clever to save your life from shark challenges.