I'm curious: Your comment implies that you find the title misleading.
What would you suggest instead?
"How octopuses squeeze through an opening far smaller than the body diameter" is boring, verbose, and a quote from the article.
How about very small gaps instead of "too small gaps". Simple change to the title, but far more accurate and non-contradictory.
But would you still click on it?
I think adding ‘seemingly’ would cover the basis of violating the law of contradiction.