How Octopuses Became the Ocean’s Smartest Invertebrates — 25 Problem-Solving Abilities

2. Opening Jars from the Inside

In a series of fascinating experiments, octopuses have been observed unscrewing jar lids from the inside to escape or access food. This feat, documented by researcher Jennifer Mather, reveals remarkable spatial reasoning and fine motor control.
Octopuses must understand the mechanism, maneuver their arms, and apply coordinated force—all while confined within the jar. This problem-solving ability highlights their exceptional dexterity and capacity to manipulate complex objects in their environment.