A video of an octopus attacking a crab has received over two million views on YouTube.
The footage shows an unsuspecting crab approaching a small rock pool in Yallingup, western Australia.
As the oblivious crab reaches the water's edge the predatory octopus springs from the deep and starts to wrestle the crab across the rocks.
As the octopus recoils from the claws of the crab the woman who captured the attack - Porsche Indrisie - can be heard yelling, 'There's an octopus eating a crab!'
The attacker quickly overpowers its prey and drags it down beneath the surface and presumably to a grim end.
Commenting underneath her video, Ms Indrisie wrote, "I didn't know why I chose to film this crab, but thought I would try and get closer to it but something else beat me to it."
Watch the full showdown here: