The body of the animal was found on a beach in Turkey.
"I noticed the dolphin in the sea and watched as it washed on to the beach," Tugrul Metin told the Daily Mail.
Metin was shocked by the two-headed mammal and had no idea what to do, so he called police.
"I've never even heard about a dolphin like this let alone seen one with my own eyes, I was completely shocked," he continued.
Marine scientists say the one-year-old calf had a single fin but two heads, one without a blow hole.
Mehmet Gokoglu from Ak Deniz University confirmed he and his group will take the chance to study the animal.
"Such a dolphin is a very rare occurrence," he began.
“Similar to the occurrence of conjoined human twins," he concluded.