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Scientists have no idea why there is a rise in numbers of two headed sharks

By Jatin Sharma, 3 April 2017

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Nature is a very unpredictable thing. Whenever you seem to think, you have got the better of nature, it will show that why it has managed to come back from whatever natural disaster or manmade calamity, was thrown at it. Humans have been taking advantage of the nature too much and the abuse had reached a stage where nature has begun to fight back. One such phenomenon is seen in the rise in the numbers of two headed sharks found in the world recently and scientists have no idea about the reason.

1 The two headed sharks

Fisherman Christian Johnson caught a two headed shark embryo off the coast of Australia in 2008; little did he know that he would start a mystery that hasn’t been solved till today. Again in 2013, a group of fisherman caught a full grown female bull-shark, which had a two headed shark embryo in it. This condition of having two heads in called bicephaly. Blue Sharks have produced most number of two headed embryos because they carry upto 50 babies in the womb.

Recently, scientists hauled in an Atlantic sawtail catshark for research in Spain. It was the first example of this condition in an oviparous shark- shark that lays eggs. However, bicephaly is not beneficial for the sharks.

two headed sharks

Image Source: www.nationalgeographic.com

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