Shark vs Octopus

CNN recently aired this incredible video shot by national geographic of an aquarium that was having a problem with fish disappearing. After they installed a camera, they saw something incredible---A fish eating octopus, and the camera managed to find the eight-legged creature grab and EAT a rather larger shark!

I never would have thought that the killer of the ocean would succumb to an octopus---I'm not even sure if those critters even have a skeleton!

What do you guys think?