There are about 300 known species of octopus, and they are quite possibly the most intelligent invertebrates. Some species are able to change color at will to blend in with their surroundings when threatened, and some will even change their shape to mimic other animals to save themselves. Other octopuses have shown rudimentary tool use by arranging discarded shells as shelters.
Because octopuses lack a skeleton, they are able to navigate through tight places. But what happens when there isn’t a hole to go through? Apparently, they just have to make one. This video shows an octopus that uses its remarkable flexibility and suctioned tentacles to its advantage when confined inside a jar.
But what about when the situation is reversed and the octopus wants to get inside the jar? Opening jars can even be difficult for humans, but with a meal as an incentive, this octopus decided to give it a try: