One confused little crocodile appeared to have mistaken a hippo for a rock after clambering on its back to catch some afternoon sun.
But, even when the "rock" started moving, the tenacious reptile stuck to his guns, obviously not wanting to give his prime sunbathing spot.
Field guide Richard Millar, 21, caught the moment on camera at South Africa's Kruger National Park.
Mr Millar told the Metro: 'I came across this hippo in the water which at first had a heron on its back then all of a sudden, this small crocodile crawled up one side of it and just sat on its back.
"It must have thought it was a rock in the water so chilled out on it for a while. They are cold-blooded creatures so need to rest in the sun.
"Hippos and crocodiles aren't rivals in the wild – a hippo may try and bite a crocodile but only when it feels its young is threatened.
"It was a complete once-in-a-lifetime situation. I am pretty sure I will never get another photograph like that for the rest of my life."
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