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Nature & Environment

Mystery surrounds rise of two-headed sharks

By T.K. Randall
November 4, 2016 · Comment icon 24 comments

As if one head wasn't already enough. Image Credit: CC BY 2.0 Hermanus Backpackers
Scientists have reported an unexplained rise in the number of sharks being found with two heads.
The peculiar mutation, which has been occurring across a multitude of shark species, has been reported increasingly frequently lately and experts are struggling to explain exactly why this is.

One recent example was discovered by Professor Valentin Sans Coma from the University of Malaga who had been studying catfish shark embryos when he found one with two heads.

The specimen, which was one of 800 embryos grown in a lab for study, had never been exposed to any chemicals, radiation or other pollutants that could explain its perplexing mutation.
Out at sea, marine scientist Nicolas Ehemann, who had studied a two headed smalleye smooth-hound shark and a two-headed blue shark, believes that the rise in mutant sharks is due to overfishing which has massively reduced the fish gene pool in recent years.

Finding more of these abnormal specimens to study however is proving very difficult as they are challenging to locate and even when they are caught they don't tend to live very long.

"I would like to study these things, but it's not like you throw out a net and you catch two-headed sharks every so often," said Ehemann. "It's random."

Source: | Comments (24)

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Recent comments on this story
Comment icon #15 Posted by Eye of Giza 8 years ago
2 headed sharks, where the photos
Comment icon #16 Posted by Thorvir Hrothgaard 8 years ago
Comment icon #17 Posted by CryptoAce 8 years ago
Sharknado: Twin Terrors
Comment icon #18 Posted by glorybebe 8 years ago
I don't know who actually watches those movies.  Lol. 
Comment icon #19 Posted by Yamato 8 years ago
From the main article UM linked to:   Sounds like a real vacation they're having.     The mindblowing mass slaughter of sharks is our fault.  As is the pollution, not to mention Fukushima.        
Comment icon #20 Posted by Thorvir Hrothgaard 8 years ago
I don't know either.  But they keep getting made.
Comment icon #21 Posted by glorybebe 8 years ago
I know!  How crazy is that!?
Comment icon #22 Posted by oldrover 8 years ago
That'd be me. 
Comment icon #23 Posted by glorybebe 8 years ago
 aawww!  Now cheesy 80's movies I will watch!   Personally I think it is that we are now studying the animals.  In the past humans were more concerned with just surviving, the study of nature took a backseat.
Comment icon #24 Posted by DieChecker 8 years ago
Real or Fake?

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