Shark 2 heads – this name seems to only appear in some Hollywood horror movies. However, in recent years, the rate of double-headed sharks appearing in the wild has been increasing. In 2013, a fisherman from Florida caught a bulldog shark while pregnant. Inside is an egg containing a two-headed fetus.
Or as in 2011, a two-headed blue shark was also discovered in the Gulf of California. Blue sharks are also the species with the highest double-headed shark production rate, as they give birth in large numbers – up to 50 cubs per litter.
Double-headed sharks are appearing more and more, but no one understands why.
Even in early 2016, experts from the University of Malaga (Spain) discovered a double-headed shark embryo in a laboratory environment – considered the most perfect for the development of the organism.
The problem is, experts still don’t understand why this is happening.
According to National Geographic, it was clear that these shark embryos had a genetic problem. Nicolas Ehemann, an expert from the University of Malaga, said the shark’s genes mutate more strongly and the problem is that they haven’t been exposed to any chemicals or radiation.
Why? Ehemann said humans are the main cause, especially the fact that we overexploit seafood.
According to her, overfishing limits the genetic diversity of sharks, making it more likely that genetic abnormalities will appear, creating baby sharks with two heads.
But what about the 2 heads? It’s okay, it’s just that it’s hard for one body to support two brains. The body of a two-headed shark cannot develop well, and it has a very short lifespan.
The direct cause still needs more research to determine. However, experts also say that humans must change quickly, if they are not to destroy the future of many animals around the world.