Here's why:
* Octopus are highly skilled escape artists: Their ability to squeeze through tight spaces and change color to blend in with their surroundings makes them difficult prey.
* Octopus have strong beaks: They can deliver painful bites, potentially deterring sharks.
* Octopus are relatively small: While some octopus species can grow large, most aren't large enough to be a substantial meal for a great white shark.
However, it's important to note:
* There's always a chance: While uncommon, it's theoretically possible for a great white to encounter and eat an octopus under certain circumstances.
* Limited observation: The deep ocean remains largely unexplored, and our knowledge of shark diet is based on stomach content analysis and observed behavior. This means some dietary interactions could go unnoticed.
Overall, while it's not impossible for a great white shark to eat an octopus, it's not considered a regular part of their diet.