Being hooked by a fisherman is probably up there with the worst things that could happen to a shark. But what about becoming bait for an even bigger beast as you're being hauled into the boat?
This was the fate of a poor great white in New Zealand this week.
And a spectacular photograph of the encounter, which shows Charles Darwin's survival of the fittest - or perhaps biggest - theory in action, has taken the web by storm after it was posted on Reddit.
Chomp: The Kiwi fisherman took the spectacular photo, pictured, on December 28, and posted it on Reddit
The decent-sized shark was hooked in the waters near Kaiteriteri during a post-Christmas expedition on December 28.
The fisherman, whose Reddit name is Mancubus, was probably pretty chuffed with his catch and daydreaming about a fish and chip dinner, with the shark firmly on the end of the line.
But that was before he had competition.
The Kiwi didn't even have time to haul his catch onto the deck before the smaller shark was in the jaws of the monster predator.
Shark waters: The epic photo was captured in the waters near Kaiteriteri, New Zealand, pictured
It is unclear exactly what happened next, though the fisherman presumably cut his losses and the line, losing his catch.
However, he did escape with the epic image, which immediately shot to Reddit's front page and has garnered also 1000 comments since.
It's not uncommon for sharks to prey upon each other, but it's rarely caught in such a daring fashion.
Now we know what it looks like to be bait for such a beast, it's probably best not to go swimming too far from the New Zealand coast any time soon.