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

2 Bicephaly – boon or curse for sharks

Animals with bicephaly or two heads rarely live long. Most of the animals usually die within few hours of birth. In such animals, each head has its own brain and it shares the control of the body parts and limbs. This causes the animals to move in a haphazard condition with both heads vying for control. In snakes, the two heads may even bite each other or try to swallow each other.

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3 Mutation or overfishing- what is the reason behind this?

Scientists have been trying to find out the reason behind the rise of numbers of such two headed sharks. They have given reasons such as genetic mutation, pollution and even overfishing to solve this mystery. A scientist Valentín Sans-Coma says” it's unknown whether the deformed animal would have survived. Because it's the first such conjoined twin found in egg-laying sharks, its likely that such offspring don't live long enough for people to find them.”

However they don’t have sufficient data to come to any conclusions as there are still not enough live specimens caught for them to conduct studies on. Marine scientist Dr. Nicolas Ehemann says that,” the two-headed fetuses are more prevalent in nature, then overfishing is a strong culprit as it may cause the gene pool to shrink.”

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