For a period of several months, researchers at the National Marine Mammal Foundation in California, USA were baffled by a mysterious human-like sounds coming from their whale and dolphin enclosure.
A mysterious visitor, trespasser, burglar and many other theories were proven as plain wrong as the real culprit was non other than a 15-year-old beluga whale named Noc.
The scientists were amazed, to say the least, with the striking similarity of whale's voice to the one belonging to humans.
It was all well recorded of course, so you can hear it with your own ears.
Check out the talking whale recording below!