Why are these gray African crocodiles turning orange?

Story highlights

  • Genetic research suggests they may be mutating into a new species
  • The crocs live in the Abanda caves in Gabon.

(CNN)In a pitch black, bat-ridden cave in the central African country of Gabon, scientist Olivier Testa came face to face with a terrifying creature with bright red eyes and orange scales.

"It was maybe two or three meters from me and the eyes were bright red, reflecting my light. I was so frightened," Testa, a cave expert said.
    In the course of his work, Testa has come across many weird and wonderful sightings -- but none as bizarre as this orange reptile with blazing red eyes.
    Testa and his colleague crocodile expert Matt Shirley first visited the sit