How octopuses ‘taste’ things by touching

Unique nerve cells found in the animal’s suckers can detect prey’s defense chemicals

octopus in a coffee mug

A California two-spot octopus (Octopus bimaculoides) rests in a coffee mug in a Harvard University lab. Researchers have discovered sensory cells that are unlike those in other animals embedded in octopus suckers. Those cells taste by touch.

Lena van Giesen

Octopus arms have minds of their own. 

Each of these eight supple yet powerful limbs can explore the seafloor in search of prey, snatching crabs from hiding spots without direction from the octopus’ brain.