Two-headed-sharks have been appearing frequently around the world and scientists don’t know why.
This Two Headed Shark Baffled Scientists All Over The World
By
Editorial Staff in
Nature
On 17th November 2016
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#1
Fishermen from the Gulf of California and northwestern Mexico are catching more and more two-headed sharks after the first one was spotted in 2008 by Christopher Johnston, a fisherman in the Indian Ocean.
#2
A 2011 study found conjoined twins in blue sharks that were discovered in the Gulf of California. Blue sharks have produced the highest number of two-headed embryos since they can carry up to 50 babies at a time, says Felipe Galvan-Magana, leader of the study at the National Polytechnic Institute in Mexico.
An increasing number of two-headed sharks have been found in the world's oceans in recent years, but scientists can't agree why. And no one is sure how to prevent the trend from inspiring yet another "Sharknado" sequel.
Last month, scientists discovered an egg-laying (oviparous) shark embryo with two heads in a lab in Malaga, Spain. Previously, the only known two-headed sharks were from species that give birth to live babies, according to the BBC.
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#3
Johnston hauled in a pregnant blue shark off the coast of Australia and when he cut it open, a two-headed shark fetus popped out. Johnston tried saving the fetus by putting it in a tank and feeding it, but it died.
History was made after the very first two-headed bull shark in the world was caught just recently.
