A Turkish man called police after he spotted the rotting carcass of a two-headed dolphin on a beach.

Tugrul Metin, a 39-year-old gym teacher, saw the dead animal's remains float ashore near Izmir, on Turkey's west coast.

"I noticed the dolphin in the sea and watched as it washed on to the beach," Metin said according to the Daily Mail. "I couldn't take it in at first. I thought my eyes were playing tricks on me... I was completely shocked."

The dolphin was believed to be a one-year-old calf and measured just over 3.2ft in length, according to the Mirror.

The condition of having two heads is known as polycephaly. It can affect all sorts of animals, even humans.