Thanks to the bioluminescent bacteria inhabiting its light organ, the vividly colored southern bobtail squid (Euprymna tasmanica) can glow in the dark. 

The Hawaiian bobtail squid (Euprymna scolopes) is a nocturnal predator with a light organ full of bioluminescent bacteria attached to an ink sac, which the animal uses to control the amount of light it releases.

A round-up of recent discoveries in behavior research

Scientists develop tape coated with cephalopod proteins to reflect infrared light.

A round-up of recent discoveries in behavior research

Polymer changes color and texture in response to remote signals. 

A symbiotic relationship between squid and bacteria provides an alternative explanation for bacterial sheathed flagella.

To control their color displays, squid fine-tune the optical properties of light-reflecting cells by rapidly expelling and imbibing water across a tightly pleated membrane

Arciteuthis from disparate locations around the world are genetically similar.