The fear hunter of the ocean it's now the prey

Scientists are bewildered because they find dead great sharks in different parts of the world.
Which animal is bright and big enough for killing a great white shark?

Eli Martinez, an expert in sharks, has done different experiments to find out the answer to this question.

Eli has a  theory: another more evolved than sharks, has found out the shark's weak spot.
This weak spot is the tonic immobility.


Tonic immobility is a defence  mechanism usual by many animals. In the event of shark, perhaps that turns on when the shark is face up, that makes the shark susceptible.
But this isn't the only way to make the shark susceptible, also we can do when we stroke in the lower part o f the snout.

Now I explain the experiment which Eli did to confirm this theory:
First, he does the test with a silky shark (one of the fastest marine animals of the world, but also it's a small shark).  First he catches the shark by his tail and after spins it.

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Now he tests with whitetip reef shark. This time he puts on chainmail doublet to protect himself from the bites of the sharks and he checks the other way for make the tonic immobility in sharks.

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He checks his theory with small sharks, now he will checks with great sharks. But now he takes off the chainmail doublet to improve mobility.

First he confirms the theory with the tiger shark:


With this shark he has problems because when he strokes in the lower part o f the snout, the shark attempts to bite  him. But bit by bit he accomplished.






Finally he checks the theory with the Great White Shark:

But the shark attacks him and he decides to go into the cage.

When the sharks attack Eli he accomplished to caress his snout for one second.

That make the shark groggy. He thinks if he can do that more time, he will get the same result with others sharks.






Now only he has to find the responsible. This is why he goes to the place where appear 100 deads sharks. After analyzing the ambient he decides to see a recorder where they record the scene.
In all of them appear the fin of the killer whale.
For this we can say: killers whales learn to find the weak spot of sharks and they use this to eat.