Okay, one more octopus fact.
Bonus Fun Fact: Octopi can fit through any hole that is big enough to accommodate their beak. The beak (the mouthparts of the octopus at the center of their underside) is the only rigid body part on an octopus and is rarely larger than an inch in diameter, except for quite large specimens. Otherwise, their soft body can squeeze through any orifice just fine.
Video evidence:
Jason E. Andersen 
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