These snorkelers were in for an incredible treat in the waters of Hawaii.
Footage taken from above the water near Kaupulehu shows a humpback whale calf swimming closely beside its mother and twisting and turning through the waves.
Then, in an astonishing moment captured on a GoPro, the whale breaches and jumps into the air.
The footage was shared as part of a commercial for GoPro. The company credited Fabin Jobin and Anders Carlson for capturing the "jaw-dropping" footage.
It’s not the first time the camera company has featured amazing creatures: previous campaigns have starred a grizzly bear slapping the camera and close encounters with elephants.
Watch Below: TV Host Can't Contain His Excitement as Blue Whale is Captured Live on Air