wild octopuses who live in tidal areas often haul themselves out on land in order to visit different tide pools for better hunting. They may also do this to escape predators in the water, such as another octopus. I had read that in areas blessed by constant ocean spray, an octopus might be able to survive out of water for thirty minutes or more.

Human eyes have three visual pigments, allowing us to see color. Octopuses have only one—which would make these masters of camouflage, commanding a glittering rainbow of colors, technically color-blind. How, then, does the octopus decide what colors to turn? New evidence suggests cephalopods might be able to see with their skin.

researchers found the skin of the octopus’s close relative, the cuttlefish Sepia officinalis, contains gene sequences usually expressed only in the retina of the eye.

The human brain, for instance, is organized into four different lobes, each associated with different functions. An octopus brain, depending on the species and how you count them, has as many as 50 to 75 different lobes.

American naturalist Henry Beston writes that animals “are not brethren, they are not underlings” but beings “gifted with extensions of the senses we have lost or never attained, living by voices we shall never hear.” They are, he writes, “other nations, caught with ourselves in the net of life and time, fellow prisoners of the splendor and travail

Neurons in the brain fire in distinctive patterns while a rat in a maze performs particular tasks. The researchers repeatedly saw the exact same patterns reproduced while the rats slept—so clearly that they could tell what point in the maze the rat was dreaming about, and whether the animal was running or walking in the dream. The rats’ dreams took

The slits of her pupils always remain horizontal, no matter what position she is in, cued by balance receptors called statocysts. These saclike structures are lined with sensory hairs and equipped with small, mineralized balls that shift inside the statocyst in response to motion and gravity. But the always-horizontal pupil can change dramatically

Octopuses and their relatives have what Woods Hole researcher Roger Hanlon calls electric skin. For its color palette, the octopus uses three layers of three different types of cells near the skin’s surface—all controlled in different ways. The deepest layer, containing the white leucophores, passively reflects background light. This process

It’s a shared sweetness, a gentle miracle, an uplink to universal consciousness—the notion, first advanced by pre-Socratic Greek philosopher Anaxagoras in 480 BC, of sharing an intelligence that animates and organizes all life. The idea of universal consciousness suffuses both Western and Eastern thought and philosophy, from the “collective