Two scuba divers were stunned to discover a mammoth bone that could date back to the Ice Age.
Derek Demeter and Henry Sadler found the 90kg bone in the Peace River in Florida, USA, and it could be around 100,000 years old.
It is believed the bone belonged to a Columbian mammoth, which wandered around Florida between 2.6 million and 10,000 years ago.
Derek told FOX 35 Orlando: “This one’s much more dense, so we kind of think it’s somewhere in the middle.
“Probably 100,000 years old.”
The pair see themselves as amateur palaeontologists and have dug up a number of other bones in the past.
On the same day they discovered parts of an extinct shark and the tooth of a sabre-tooth tiger.
Henry said the friends have previously found mammoth teeth in the same river.
Derek added: “The thing I love about it is, just like astronomy, it’s time travelling. It plays with the imagination so you go: ‘Wow, what was going on at this time?'”
Some of their previous discoveries have ended up in the Florida Museum of Natural History, but this newest find will end up in a classroom where Henry teaches.
He said: “It’s currently sitting in the classroom where the kids are able to see it, touch it, feel it and really get a history of the natural world.
“I talk to my kids about the movie Ice Age. They’ve heard about sabre-tooth tigers, and actually finding a piece of one of these animals and bringing it to life for those kids – it’s just awesome.”
The Columbian mammoth could grow to be up to 14 feet and inhabited North America as far north as the northern United States and as far south as present day Costa Rica.
For a few thousand years prior to their extinction, they coexisted in North America with Paleoamericans – the first humans to inhabit the Americas.
They hunted them for food, used their bones for making tools and depicted them in ancient art.