Crabs can’t hide from an octopus with a mirror

Wild-caught cephalopods can learn to hunt for crabs using only their prey’s reflection

A yellow octopus is shown on a vertical mirror, with the reflection of its underside visible in the mirror

Octopuses initially approach a mirror to find reflected prey, but they eventually learn to move directly toward their target.

Mary Kieseler

Mirrors are tricky. Even humans aren’t born with an intuitive understanding of them; we have to learn how they work. Now, scientists have discovered that the California two-spot octopus (Octopus bimaculoides) can also learn to use mirrors, researchers report June 3 in Current Biology