It seems like it only exists in movies, but reports show that two-headed sharks are appearing more and more often. What is the reason?
Two-headed shark – this name seems to only exist in Hollywood horror movies. However, in recent years, the rate of two-headed sharks appearing in the wild has increased. In 2013, a fisherman in Florida caught a pregnant bull shark. Inside there is an egg, containing a two-headed fetus.
Or in 2011, a two-headed blue shark was also discovered in the Gulf of California. Blue sharks are also the species with the highest rate of producing two-headed sharks, because they give birth in large numbers – up to 50 babies/litter.
Two-headed sharks appear more and more, but no one understands why.
Even in early 2016, experts at the University of Malaga (Spain) discovered a two-headed shark embryo in a laboratory environment – which is considered the most perfect for the development of the organism.
The problem is that experts still do not understand why this happened.
Two-headed shark embryo in the laboratory.
According to National Geographic, it is clear that these shark embryos have encountered a genetic problem. Nicolas Ehemann – an expert at the University of Malaga, said that shark genes are mutating more strongly, and the problem is that they are not exposed to any chemicals or radiation at all.
Why? Ehemann said that humans are the cause, specifically our overexploitation of seafood.
According to her, overfishing limits the genetic diversity of sharks , making gene instabilities more likely to appear, creating two-headed baby sharks.
The two-headed shark’s body cannot develop well, and its lifespan is very short.
But what about the two heads? The problem is not that big, it’s just that one body can hardly support two brains. The two-headed shark’s body cannot develop well, and its lifespan is very short.
The direct cause still needs much research to determine. However, experts also believe that humans need to change soon, if they do not want to destroy the future of many animals in the world.
