When David White was out at the mouth of the Daintree River in Far North Queensland this week, he spotted something more than a little unexpected.
As the owner of the Solar Whisper Daintree River Wildlife Cruises, he's no stranger to the waterway, but pulled out his camera to film this weird creature the popped its head out of the mud.
“Looking for a crocodile at low tide in a mud puddle, found this instead, is it a mini whale, a fish or a mussel?” he asked.
While White wasn’t sure, other guesses on his company’s Facebook page included a lungfish and “your own Daintree monster, like Nessie!”.
Check out the video above and see what you think.