In this world, how do you catch a fish bigger than you? No, it is not necessarily confined to this world.
In any world, how does one defeat the thing that is above them in terms of natural order? Can a cat hunt a lion? Can a normal jellyfish hunt a shark? Can a deer hunt a bear?
Are there any examples of such a thing happening in the world?
The answer is obvious.
The humans, we, are the prime example of that. From the moment we are born, do you think we have the necessary physical aspects to deal with a bear or any type of predator?
No, we do not.
But we are still in this world, living around for countless centuries or even millenniums.
That alone is an example.
Then how did we do it? At first, we were overwhelmed, but then we started adapting and getting crafty. We started utilizing the most important thing in this world.
Being able to think and plan.